ГДЗ по математике 5 класс Мерзляк ФГОС Задание 1077

\[\boxed{\mathbf{1077}\mathbf{.}\mathbf{\ }}\]

\[1)\ \frac{3^{\backslash 9}}{8}x + \frac{4^{\backslash 8}}{9}x - \frac{5^{\backslash 6}}{12}x =\]

\[= \frac{27 + 32 - 30}{72}x = \frac{29}{72}x\]

\[x = 3\frac{3}{29} = \frac{90}{29}:\]

\[2)\ 3\frac{3^{\backslash 3}}{5}y - 2\frac{1^{\backslash 5}}{3}y - \frac{1}{15}y =\]

\[= \left( 3\frac{9}{15} - 2\frac{5}{15} - \frac{1}{15} \right)y =\]

\[= 1\frac{3}{15}y = 1\frac{1}{5}y\]

\[y = 10:\]