z-20=-20

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Solution for z-20=-20 equation: 


Simplifying
z + -20 = -20

Reorder the terms:
-20 + z = -20

Add '20' to each side of the equation.
-20 + 20 + z = -20 + 20

Combine like terms: -20 + 20 = 0
0 + z = -20 + 20
z = -20 + 20

Combine like terms: -20 + 20 = 0
z = 0

Solving
z = 0

Solving for variable 'z'.

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

Simplifying
z = 0

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