-9+8a=7+4a

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Solution for -9+8a=7+4a equation: 



-9+8a=7+4a

We move all terms to the left:

-9+8a-(7+4a)=0

We add all the numbers together, and all the variables

8a-(4a+7)-9=0

We get rid of parentheses

8a-4a-7-9=0

We add all the numbers together, and all the variables

4a-16=0

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

4a=16

a=16/4

a=4

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