1)25-(у-4)=30-35
25-y+4=-5
-y=-5-4-25
-y=-34
y=34
2)0,6(2у-11)=0,4(у-7)-7,48
1.2y-6.6=0.4y-2.8-7.48
1.2y-0.4y=-10.28+6.6
0.8y=-3.68
y=-3.68/0.8
y=-4.6
1)25-(у-4)=30-35
25-y+4=-5
-y=-5-4-25
-y=-34
y=34
2)0,6(2у-11)=0,4(у-7)-7,48
1.2y-6.6=0.4y-2.8-7.48
1.2y-0.4y=-10.28+6.6
0.8y=-3.68
y=-3.68/0.8
y=-4.6