9z+15=8z+12

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Solution for 9z+15=8z+12 equation:


Simplifying
9z + 15 = 8z + 12

Reorder the terms:
15 + 9z = 8z + 12

Reorder the terms:
15 + 9z = 12 + 8z

Solving
15 + 9z = 12 + 8z

Solving for variable 'z'.

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

Add '-8z' to each side of the equation.
15 + 9z + -8z = 12 + 8z + -8z

Combine like terms: 9z + -8z = 1z
15 + 1z = 12 + 8z + -8z

Combine like terms: 8z + -8z = 0
15 + 1z = 12 + 0
15 + 1z = 12

Add '-15' to each side of the equation.
15 + -15 + 1z = 12 + -15

Combine like terms: 15 + -15 = 0
0 + 1z = 12 + -15
1z = 12 + -15

Combine like terms: 12 + -15 = -3
1z = -3

Divide each side by '1'.
z = -3

Simplifying
z = -3

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