x+3-12=12

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Solution for x+3-12=12 equation: 


Simplifying
x + 3 + -12 = 12

Reorder the terms:
3 + -12 + x = 12

Combine like terms: 3 + -12 = -9
-9 + x = 12

Solving
-9 + x = 12

Solving for variable 'x'.

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

Add '9' to each side of the equation.
-9 + 9 + x = 12 + 9

Combine like terms: -9 + 9 = 0
0 + x = 12 + 9
x = 12 + 9

Combine like terms: 12 + 9 = 21
x = 21

Simplifying
x = 21

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