5a+7=9a-12

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Solution for 5a+7=9a-12 equation: 



5a+7=9a-12

We move all terms to the left:

5a+7-(9a-12)=0

We get rid of parentheses

5a-9a+12+7=0

We add all the numbers together, and all the variables

-4a+19=0

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

-4a=-19

a=-19/-4

a=4+3/4

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