-300=-20z

Solution for -300=-20z equation:

Simplifying
-300 = -20z

Solving
-300 = -20z

Solving for variable 'z'.

Move all terms containing z to the left, all other terms to the right.

Add '20z' to each side of the equation.
-300 + 20z = -20z + 20z

Combine like terms: -20z + 20z = 0
-300 + 20z = 0

Add '300' to each side of the equation.
-300 + 300 + 20z = 0 + 300

Combine like terms: -300 + 300 = 0
0 + 20z = 0 + 300
20z = 0 + 300

Combine like terms: 0 + 300 = 300
20z = 300

Divide each side by '20'.
z = 15

Simplifying
z = 15