A-20=13

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Solution for A-20=13 equation: 


Simplifying
A + -20 = 13

Reorder the terms:
-20 + A = 13

Solving
-20 + A = 13

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 = 13 + 20

Combine like terms: -20 + 20 = 0
0 + A = 13 + 20
A = 13 + 20

Combine like terms: 13 + 20 = 33
A = 33

Simplifying
A = 33

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