9=z+12

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Solution for 9=z+12 equation:


Simplifying
9 = z + 12

Reorder the terms:
9 = 12 + z

Solving
9 = 12 + z

Solving for variable 'z'.

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

Add '-1z' to each side of the equation.
9 + -1z = 12 + z + -1z

Combine like terms: z + -1z = 0
9 + -1z = 12 + 0
9 + -1z = 12

Add '-9' to each side of the equation.
9 + -9 + -1z = 12 + -9

Combine like terms: 9 + -9 = 0
0 + -1z = 12 + -9
-1z = 12 + -9

Combine like terms: 12 + -9 = 3
-1z = 3

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

Simplifying
z = -3

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