Question

Please answer this questions now fast which I marked​

Answer 1

solution for q 4 and q 5. will provide other also .

Answer 2

Step-by-step explanation:

1)

7y=5y-20

7y-5y= -20

2y= -20

y= -10

2)

x-5/2-x-3/5=1/2

5x-25-2x-6/10=1/2

3x-31=5

x=12

3)

-3x+5x=22

2x=22

x=11

4)

9z-2z= -13+4

7z= -9

z= -9/7