3a+-3a=20

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Solution for 3a+-3a=20 equation: 


Simplifying
3a + -3a = 20

Combine like terms: 3a + -3a = 0
0 = 20

Solving
0 = 20

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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