A-(-20)=-13

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Solution for A-(-20)=-13 equation: 


Simplifying
A + -1(-20) = -13

Multiply -1 * -20
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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