Question

23,4у-13,5у=11,88

7,5у+1,6у=11,83

Answer 1

7.5 y+1.36y=11.83
9.1y=11.83
y=11.83:.91
y=1.3

23.4y-13.5y=11.88
9.9y=11.88
y=11.88:9.9
y=1.2

Answer 2

спасибо