1)-1/3x=9
x=-27
2)2y=1 3/5
1 3/5=8/5
2y=8/5
y=8/10
y=4/5
3)-3(x-4)=5x-12
-3x+12=5x-12
-8x=-24
x=3
4)2(0,8y-1,2)-(-4+0,4y)=1,4y-1
1,6y-2,4+4-0,4y=1,4y-1
1,2y+1,6=1,4y-1
-0,2y=-2,6
y=13
1)-1/3x=9
x=-27
2)2y=1 3/5
1 3/5=8/5
2y=8/5
y=8/10
y=4/5
3)-3(x-4)=5x-12
-3x+12=5x-12
-8x=-24
x=3
4)2(0,8y-1,2)-(-4+0,4y)=1,4y-1
1,6y-2,4+4-0,4y=1,4y-1
1,2y+1,6=1,4y-1
-0,2y=-2,6
y=13