a-7-13=12

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Solution for a-7-13=12 equation: 


Simplifying
a + -7 + -13 = 12

Reorder the terms:
-7 + -13 + a = 12

Combine like terms: -7 + -13 = -20
-20 + a = 12

Solving
-20 + a = 12

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 = 12 + 20

Combine like terms: -20 + 20 = 0
0 + a = 12 + 20
a = 12 + 20

Combine like terms: 12 + 20 = 32
a = 32

Simplifying
a = 32

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