-12+-9=3(2+-9)

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Solution for -12+-9=3(2+-9) equation: 


Simplifying
-12 + -9 = 3(2 + -9)

Combine like terms: -12 + -9 = -21
-21 = 3(2 + -9)

Combine like terms: 2 + -9 = -7
-21 = 3(-7)

Multiply 3 * -7
-21 = -21

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

Combine like terms: -21 + 21 = 0
0 = -21 + 21

Combine like terms: -21 + 21 = 0
0 = 0

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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