12+3a=-6+3a

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Solution for 12+3a=-6+3a equation: 


Simplifying
12 + 3a = -6 + 3a

Add '-3a' to each side of the equation.
12 + 3a + -3a = -6 + 3a + -3a

Combine like terms: 3a + -3a = 0
12 + 0 = -6 + 3a + -3a
12 = -6 + 3a + -3a

Combine like terms: 3a + -3a = 0
12 = -6 + 0
12 = -6

Solving
12 = -6

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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