Question

20=5z-13
z=???

-9+2x=-4
x=??????

Answer 1

z = 33/5 or 6.6

x = 5/2 or 2.5

Explanation:

20 = 5z - 13

Add 13 to both sides.

5z = 33

Divide both sides by 5.

z = 33/5 or 6.6

-9 + 2x = -4

Add 9 to both sides.

2x = 5

Divide both sides by 2.

x = 5/2 or 2.5