z+23=21

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Solution for z+23=21 equation: 


Simplifying
z + 23 = 21

Reorder the terms:
23 + z = 21

Solving
23 + z = 21

Solving for variable 'z'.

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

Add '-23' to each side of the equation.
23 + -23 + z = 21 + -23

Combine like terms: 23 + -23 = 0
0 + z = 21 + -23
z = 21 + -23

Combine like terms: 21 + -23 = -2
z = -2

Simplifying
z = -2

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