12-3a=7-3a

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Solution for 12-3a=7-3a equation: 


Simplifying
12 + -3a = 7 + -3a

Add '3a' to each side of the equation.
12 + -3a + 3a = 7 + -3a + 3a

Combine like terms: -3a + 3a = 0
12 + 0 = 7 + -3a + 3a
12 = 7 + -3a + 3a

Combine like terms: -3a + 3a = 0
12 = 7 + 0
12 = 7

Solving
12 = 7

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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