z-10-20=-20

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Solution for z-10-20=-20 equation: 


Simplifying
z + -10 + -20 = -20

Reorder the terms:
-10 + -20 + z = -20

Combine like terms: -10 + -20 = -30
-30 + z = -20

Solving
-30 + z = -20

Solving for variable 'z'.

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

Add '30' to each side of the equation.
-30 + 30 + z = -20 + 30

Combine like terms: -30 + 30 = 0
0 + z = -20 + 30
z = -20 + 30

Combine like terms: -20 + 30 = 10
z = 10

Simplifying
z = 10

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