3-z=-12

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Solution for 3-z=-12 equation: 


Simplifying
3 + -1z = -12

Solving
3 + -1z = -12

Solving for variable 'z'.

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

Add '-3' to each side of the equation.
3 + -3 + -1z = -12 + -3

Combine like terms: 3 + -3 = 0
0 + -1z = -12 + -3
-1z = -12 + -3

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

Divide each side by '-1'.
z = 15

Simplifying
z = 15

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