Question

Помогите пожалуйста.

Answer 1

2$\frac{8}{15}$+y=-1$\frac{7}{10}$
2$\frac{8}{15}$+1$\frac{7}{10}$=-y
2$\frac{80}{150}$+1$\frac{105}{150}$=-y
3$\frac{185}{150}=-y$
$4\frac{35}{150}=-y$
$4\frac{7}{30}=-y$ | :-1
$y=-4\frac{7}{30}$