Question

Решите неравенство -2,5≤(1-3y)/2≤1,5

Answer 1

$-2,5 leq frac{1-3y}{2} leq 1,5, |cdot 2\\-5 leq 1-3y leq 3\\-6 leq -3y leq 2, |cdot (-1))\\-2 leq 3y leq 6\\-frac{2}{3} leq y leq 2$

Answer 2

спасибо