-2a+5a+12=4a+7

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Solution for -2a+5a+12=4a+7 equation: 



-2a+5a+12=4a+7

We move all terms to the left:

-2a+5a+12-(4a+7)=0

We add all the numbers together, and all the variables

3a-(4a+7)+12=0

We get rid of parentheses

3a-4a-7+12=0

We add all the numbers together, and all the variables

-1a+5=0

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

-a=-5

a=-5/-1

a=+5

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