4a-9=8a+3

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Solution for 4a-9=8a+3 equation: 



4a-9=8a+3

We move all terms to the left:

4a-9-(8a+3)=0

We get rid of parentheses

4a-8a-3-9=0

We add all the numbers together, and all the variables

-4a-12=0

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

-4a=12

a=12/-4

a=-3

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