x+7-12=-20

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Solution for x+7-12=-20 equation: 


Simplifying
x + 7 + -12 = -20

Reorder the terms:
7 + -12 + x = -20

Combine like terms: 7 + -12 = -5
-5 + x = -20

Solving
-5 + x = -20

Solving for variable 'x'.

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

Add '5' to each side of the equation.
-5 + 5 + x = -20 + 5

Combine like terms: -5 + 5 = 0
0 + x = -20 + 5
x = -20 + 5

Combine like terms: -20 + 5 = -15
x = -15

Simplifying
x = -15

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