-3x+-12=21

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Solution for -3x+-12=21 equation:


Simplifying
-3x + -12 = 21

Reorder the terms:
-12 + -3x = 21

Solving
-12 + -3x = 21

Solving for variable 'x'.

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

Add '12' to each side of the equation.
-12 + 12 + -3x = 21 + 12

Combine like terms: -12 + 12 = 0
0 + -3x = 21 + 12
-3x = 21 + 12

Combine like terms: 21 + 12 = 33
-3x = 33

Divide each side by '-3'.
x = -11

Simplifying
x = -11

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