5a+7a=16-4a+2+7a

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Solution for 5a+7a=16-4a+2+7a equation: 



5a+7a=16-4a+2+7a

We move all terms to the left:

5a+7a-(16-4a+2+7a)=0

We add all the numbers together, and all the variables

5a+7a-(3a+18)=0

We add all the numbers together, and all the variables

12a-(3a+18)=0

We get rid of parentheses

12a-3a-18=0

We add all the numbers together, and all the variables

9a-18=0

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

9a=18

a=18/9

a=2

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