Question

 (2)  5(у+1,2)=7у+4 помогите решить !

Answer 1

$5(y+1,2) = 7y + 4\ 5y + 6 = 7y + 4\ 5y - 7y = -6 + 4\ -2y = -2\ y = frac{-2}{-2} = 1\y=1$