ГДЗ по математике 6 класс Мерзляк ФГОС Задание 105

\[\boxed{\mathbf{105}.}\]

\[1)\ 2a + 13a + 97 = 337\]

\[15a = 337 - 97\]

\[15a = 240\]

\[a = 240\ :15\]

\[a = 18.\]

\[2)\ (3x + 5)\ :8 = 13\]

\[3x + 5 = 13 \cdot 8\]

\[3x + 5 = 104\]

\[3x = 104 - 5\]

\[3x = 99\]

\[x = 99\ :3\]

\[x = 33.\]

\[3)\ (x - 160)\ :7 - 6 = 49\]

\[(x - 160)\ :7 = 49 + 6\]

\[(x - 160)\ :7 = 55\]

\[x - 160 = 55 \cdot 7\]

\[x - 160 = 385\]

\[x = 385 + 160\]

\[x = 545.\]

\[4)\ 13 \cdot (126 - 11x) = 208\]

\[126 - 11x = 208\ :13\]

\[126 - 11x = 16\]

\[11x = 126 - 16\]

\[11x = 110\]

\[x = 110\ :11\]

\[x = 10.\]