15z-9=12z

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Solution for 15z-9=12z equation:


Simplifying
15z + -9 = 12z

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

Solving
-9 + 15z = 12z

Solving for variable 'z'.

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

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

Combine like terms: 15z + -12z = 3z
-9 + 3z = 12z + -12z

Combine like terms: 12z + -12z = 0
-9 + 3z = 0

Add '9' to each side of the equation.
-9 + 9 + 3z = 0 + 9

Combine like terms: -9 + 9 = 0
0 + 3z = 0 + 9
3z = 0 + 9

Combine like terms: 0 + 9 = 9
3z = 9

Divide each side by '3'.
z = 3

Simplifying
z = 3

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