Решебник по математике 5 класс Алышева Тысяча Задание 402

\[\boxed{\mathbf{402.}}\]

\[1)\ x + 25 = 500\]

\[x = 500 - 25\]

\[x = 475.\]

\[Проверка:\]

\[475 + 25 = 500\]

\[500 = 500.\]

\[2)\ 145 + x = 200\]

\[x = 200 - 145\]

\[x = 55.\]

\[Проверка:\]

\[145 + 55 = 200\]

\[200 = 200.\]

\[3)\ x + 3 = 300\]

\[x = 300 - 3\]

\[x = 297.\]

\[Проверка:\]

\[297 + 3 = 300\]

\[300 = 300.\]

\[4)\ 300 - x = 125\]

\[x = 300 - 125\]

\[x = 175.\]

\[Проверка:\]

\[300 - 175 = 125\]

\[125 = 125.\]

\[5)\ x - 444 = 110\]

\[x = 110 + 444\]

\[x = 554.\]

\[Проверка:\]

\[554 - 444 = 110\]

\[110 = 110.\]

\[6)\ 240 - x = 17\]

\[x = 240 - 17\]

\[x = 223.\]

\[Проверка:\]

\[240 - 223 = 17\]

\[17 = 17.\]