z-3=-15

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Solution for z-3=-15 equation: 


Simplifying
z + -3 = -15

Reorder the terms:
-3 + z = -15

Solving
-3 + z = -15

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 + z = -15 + 3

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

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

Simplifying
z = -12

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