A-(-13)=-18

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Solution for A-(-13)=-18 equation: 


Simplifying
A + -1(-13) = -18

Multiply -1 * -13
A + 13 = -18

Reorder the terms:
13 + A = -18

Solving
13 + A = -18

Solving for variable 'A'.

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

Add '-13' to each side of the equation.
13 + -13 + A = -18 + -13

Combine like terms: 13 + -13 = 0
0 + A = -18 + -13
A = -18 + -13

Combine like terms: -18 + -13 = -31
A = -31

Simplifying
A = -31

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