Question

1. -7-5z=4-3z

2. -2/3x+1 1/6=1,5x+1

3. 1/2y-1/3=5/18-8/9y

Answer 1

1) -7-5z=4-3z
-2z=11
z=-5.5

Answer 2

1. -7-5z=4-3z

-7-4=-3z+5z

-11=2z

z=-11/2

z=-5,5

 

2. -2/3x+1 1/6=1,5x+1

-2/3х-1,5х=1-1 1/6

-2/3х-3/2х=-1/6

-13/6х=-1/6

х=-1/6:(-13/6)

х=1/13

 

3. 1/2y-1/3=5/18-8/9y

1/2у+8/9у=5/18+1/3

25/18у=11/18

у=11/18:25/18

у=11/25