a+(4a-1)=9

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Solution for a+(4a-1)=9 equation: 



a+(4a-1)=9

We move all terms to the left:

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

We get rid of parentheses

a+4a-1-9=0

We add all the numbers together, and all the variables

5a-10=0

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

5a=10

a=10/5

a=2

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