4+8a=9a+7

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



4+8a=9a+7

We move all terms to the left:

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

We get rid of parentheses

8a-9a-7+4=0

We add all the numbers together, and all the variables

-1a-3=0

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

-a=3

a=3/-1

a=-3

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