6(3a+9)=4(5a+3)

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Solution for 6(3a+9)=4(5a+3) equation: 



6(3a+9)=4(5a+3)

We move all terms to the left:

6(3a+9)-(4(5a+3))=0

We multiply parentheses

18a-(4(5a+3))+54=0



We calculate terms in parentheses: -(4(5a+3)), so:

4(5a+3)

We multiply parentheses

20a+12

Back to the equation:

-(20a+12)



We get rid of parentheses

18a-20a-12+54=0

We add all the numbers together, and all the variables

-2a+42=0

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

-2a=-42

a=-42/-2

a=+21

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