Решебник по математике 5 класс Алышева Нахождение неизвестного слагаемого Задание 10

\[\boxed{\mathbf{10.}}\]

\[36 + x = 48\]

\[x = 48 - 36\]

\[x = 12.\]

\[Проверка.\]

\[36 + 12 = 48\]

\[48 = 48.\]

\[x + 26 = 66\]

\[x = 66 - 26\]

\[x = 40.\]

\[Проверка.\]

\[40 + 26 = 66\]

\[66 = 66.\]

\[x + 42 = 70\]

\[x = 70 - 42\]

\[x = 28.\]

\[Проверка.\]

\[28 + 42 = 70\]

\[70 = 70.\]

\[55 + x = 86\]

\[x = 86 - 55\]

\[x = 31.\]

\[Проверка.\]

\[55 + 31 = 86\]

\[86 = 86.\]

\[46 + x = 57\]

\[x = 57 - 46\]

\[x = 11.\]

\[Проверка.\]

\[46 + 11 = 57\]

\[57 = 57.\]

\[x + 37 = 90\]

\[x = 90 - 37\]

\[x = 53.\]

\[Проверка.\]

\[53 + 37 = 90\]

\[90 = 90.\]