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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We multiply parentheses

-4a-(2(a-9))+36=0



We calculate terms in parentheses: -(2(a-9)), so:

2(a-9)

We multiply parentheses

2a-18

Back to the equation:

-(2a-18)



We get rid of parentheses

-4a-2a+18+36=0

We add all the numbers together, and all the variables

-6a+54=0

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

-6a=-54

a=-54/-6

a=+9

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