9-3a=4(1-2a)

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Solution for 9-3a=4(1-2a) equation: 



9-3a=4(1-2a)

We move all terms to the left:

9-3a-(4(1-2a))=0

We add all the numbers together, and all the variables

-3a-(4(-2a+1))+9=0



We calculate terms in parentheses: -(4(-2a+1)), so:

4(-2a+1)

We multiply parentheses

-8a+4

Back to the equation:

-(-8a+4)



We get rid of parentheses

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

We add all the numbers together, and all the variables

5a+5=0

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

5a=-5

a=-5/5

a=-1

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