-20+a=20

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Solution for -20+a=20 equation: 


Simplifying
-20 + a = 20

Solving
-20 + a = 20

Solving for variable 'a'.

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

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

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

Combine like terms: 20 + 20 = 40
a = 40

Simplifying
a = 40

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