ГДЗ по математике 6 класс Мерзляк ФГОС Задание 106

\[\boxed{\mathbf{106}.}\]

\[1)\ 73y - y - 22y + 40 = 190\]

\[50y = 190 - 40\]

\[50y = 150\]

\[y = 150\ :50\]

\[y = 3.\]

\[2)\ 56 + 72\ :(x - 12) = 60\]

\[72\ :(x - 12) = 60 - 56\]

\[72\ :(x - 12) = 4\]

\[x - 12 = 72\ :4\]

\[x - 12 = 18\]

\[x = 18 + 12\]

\[x = 30.\]