Answer:
z = 7
Explanation:
Simplifying:
25(z + -2) = 125
Reorder the terms:
25(-2 + z) = 125
(-2 * 25 + z * 25) = 125
(-50 + 25z) = 125
Solving:
-50 + 25z = 125
Move all terms containing z to the left, all other terms to the right.
Add '50' to each side of the equation.
-50 + 50 + 25z = 125 + 50
Combine like terms: -50 + 50 = 0
0 + 25z = 125 + 50
25z = 125 + 50
Combine like terms: 125 + 50 = 175
25z = 175
Divide each side by '25'.
z = 7