4a-1=9a+8

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Solution for 4a-1=9a+8 equation: 



4a-1=9a+8

We move all terms to the left:

4a-1-(9a+8)=0

We get rid of parentheses

4a-9a-8-1=0

We add all the numbers together, and all the variables

-5a-9=0

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

-5a=9

a=9/-5

a=-1+4/5

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