12z-15=9z+3

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Solution for 12z-15=9z+3 equation:


Simplifying
12z + -15 = 9z + 3

Reorder the terms:
-15 + 12z = 9z + 3

Reorder the terms:
-15 + 12z = 3 + 9z

Solving
-15 + 12z = 3 + 9z

Solving for variable 'z'.

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

Add '-9z' to each side of the equation.
-15 + 12z + -9z = 3 + 9z + -9z

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

Combine like terms: 9z + -9z = 0
-15 + 3z = 3 + 0
-15 + 3z = 3

Add '15' to each side of the equation.
-15 + 15 + 3z = 3 + 15

Combine like terms: -15 + 15 = 0
0 + 3z = 3 + 15
3z = 3 + 15

Combine like terms: 3 + 15 = 18
3z = 18

Divide each side by '3'.
z = 6

Simplifying
z = 6

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