Страница 23, ГДЗ за 5 класс к математическому тренажеру Жохова
Задание 12. Решение уравнений (с натуральными числами и нулём)
А \[\begin{aligned} x + 70 &= 100, & \quad x &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{30}}}}} \\ x - 10 &= 10, & \quad x &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{20}}}}} \\ 30 + c &= 70, & \quad c &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{40}}}}} \\ 40 - x &= 30, & \quad x &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{10}}}}} \\ y + 8 &= 12, & \quad y &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{4}}}}} \\[10pt] y - 8 &= 15, & \quad y &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{23}}}}} \\ 100 - c &= 60, & \quad c &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{40}}}}} \\ b - 6 &= 19, & \quad b &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{25}}}}} \\ a + 15 &= 100, & \quad a &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{85}}}}} \\ c + 10 &= 90, & \quad c &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{80}}}}} \\[10pt] b - 9 &= 9, & \quad b &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{18}}}}} \\ 6 + a &= 14, & \quad a &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{8}}}}} \\ c - 7 &= 13, & \quad c &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{20}}}}} \\ 120 - y &= 20, & \quad y &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{100}}}}} \\ b + 25 &= 100, & \quad b &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{75}}}}} \\[10pt] 16 - a &= 4, & \quad a &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{12}}}}} \\ c - 3 &= 13, & \quad c &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{16}}}}} \\ 15 + x &= 30, & \quad x &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{15}}}}} \\ 60 - c &= 50, & \quad c &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{10}}}}} \\ 17 - a &= 9, & \quad a &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{8}}}}} \\[10pt] 57 + b &= 90, & \quad b &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{33}}}}} \\ a - 5 &= 54, & \quad a &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{59}}}}} \\ 40 + y &= 80, & \quad y &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{40}}}}} \\ c - 20 &= 60, & \quad c &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{80}}}}} \\ 24 - a &= 12, & \quad a &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{12}}}}} \end{aligned}\]
Б \[\begin{aligned} 55 + y &= 60, & \quad y &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{5}}}}} \\ 15 - x &= 8, & \quad x &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{7}}}}} \\ y + 179 &= 179, & \quad y &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{0}}}}} \\ 26 - b &= 17, & \quad b &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{9}}}}} \\ a - 30 &= 30, & \quad a &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{60}}}}} \\[10pt] 9 + x &= 16, & \quad x &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{7}}}}} \\ c - 8 &= 18, & \quad c &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{26}}}}} \\ 89 - y &= 89, & \quad y &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{0}}}}} \\ c + 30 &= 70, & \quad c &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{40}}}}} \\ y - 6 &= 12, & \quad y &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{18}}}}} \\[10pt] 140 - y &= 50, & \quad y &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{90}}}}} \\ 10 + a &= 30, & \quad a &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{20}}}}} \\ 40 - b &= 40, & \quad b &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{0}}}}} \\ x + 75 &= 100, & \quad x &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{25}}}}} \\ x - 12 &= 22, & \quad x &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{34}}}}} \\[10pt] 63 - c &= 0, & \quad c &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{63}}}}} \\ b + 7 &= 23, & \quad b &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{16}}}}} \\ 100 - y &= 90, & \quad y &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{10}}}}} \\ 97 + c &= 98, & \quad c &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{1}}}}} \\ 18 + b &= 30, & \quad b &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{12}}}}} \\[10pt] a + 40 &= 100, & \quad a &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{60}}}}} \\ b - 75 &= 25, & \quad b &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{100}}}}} \\ 17 - a &= 9, & \quad a &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{8}}}}} \\ c - 50 &= 50, & \quad c &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{100}}}}} \\ a - 8 &= 7, & \quad a &= \boxed{\smash[b]{\underset{\hspace{3.5em}}{\textcolor{#e03131}{\mathbf{15}}}}} \end{aligned}\]