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

13a-9=0

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

13a=9

a=9/13

a=9/13

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