A-4=-13

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Solution for A-4=-13 equation: 


Simplifying
A + -4 = -13

Reorder the terms:
-4 + A = -13

Solving
-4 + A = -13

Solving for variable 'A'.

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

Add '4' to each side of the equation.
-4 + 4 + A = -13 + 4

Combine like terms: -4 + 4 = 0
0 + A = -13 + 4
A = -13 + 4

Combine like terms: -13 + 4 = -9
A = -9

Simplifying
A = -9

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