31=z-12

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Solution for 31=z-12 equation:


Simplifying
31 = z + -12

Reorder the terms:
31 = -12 + z

Solving
31 = -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.
31 + -1z = -12 + z + -1z

Combine like terms: z + -1z = 0
31 + -1z = -12 + 0
31 + -1z = -12

Add '-31' to each side of the equation.
31 + -31 + -1z = -12 + -31

Combine like terms: 31 + -31 = 0
0 + -1z = -12 + -31
-1z = -12 + -31

Combine like terms: -12 + -31 = -43
-1z = -43

Divide each side by '-1'.
z = 43

Simplifying
z = 43

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