z+4=12

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Solution for z+4=12 equation: 


Simplifying
z + 4 = 12

Reorder the terms:
4 + z = 12

Solving
4 + z = 12

Solving for variable 'z'.

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

Add '-4' to each side of the equation.
4 + -4 + z = 12 + -4

Combine like terms: 4 + -4 = 0
0 + z = 12 + -4
z = 12 + -4

Combine like terms: 12 + -4 = 8
z = 8

Simplifying
z = 8

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