A-20=90

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Solution for A-20=90 equation: 


Simplifying
A + -20 = 90

Reorder the terms:
-20 + A = 90

Solving
-20 + A = 90

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 = 90 + 20

Combine like terms: -20 + 20 = 0
0 + A = 90 + 20
A = 90 + 20

Combine like terms: 90 + 20 = 110
A = 110

Simplifying
A = 110

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