5a-2a=-12

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Solution for 5a-2a=-12 equation: 



5a-2a=-12

We move all terms to the left:

5a-2a-(-12)=0

We add all the numbers together, and all the variables

3a+12=0

We move all terms containing a to the left, all other terms to the right

3a=-12

a=-12/3

a=-4

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