5(y+1,2)=12,5y
5y+6-12.5y=0
-7.5y+6=0
y=6/7.5
y=0.8
<span>4(3-2х)+24=2(3+2х)</span>
<span>36-8x-6-4x=0</span>
<span>30-12x=0</span>
x=30/12
x=2.5
<span>0,2(5у-2)=0,3(2у-1)-0,9</span>
<span>y-0.4-0.6y+0.3+0.9=0</span>
<span>0.4y+0.8=0</span>
y=-0.8/0.4
y=-2