3+x+-12=-15

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Solution for 3+x+-12=-15 equation: 


Simplifying
3 + x + -12 = -15

Reorder the terms:
3 + -12 + x = -15

Combine like terms: 3 + -12 = -9
-9 + x = -15

Solving
-9 + x = -15

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 = -15 + 9

Combine like terms: -9 + 9 = 0
0 + x = -15 + 9
x = -15 + 9

Combine like terms: -15 + 9 = -6
x = -6

Simplifying
x = -6

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