12-15=6z-3z

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Solution for 12-15=6z-3z equation:


Simplifying
12 + -15 = 6z + -3z

Combine like terms: 12 + -15 = -3
-3 = 6z + -3z

Combine like terms: 6z + -3z = 3z
-3 = 3z

Solving
-3 = 3z

Solving for variable 'z'.

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

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

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

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

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

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

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

Simplifying
z = -1

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