4(a-3)=2(5a-15)

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Solution for 4(a-3)=2(5a-15) equation: 



4(a-3)=2(5a-15)

We move all terms to the left:

4(a-3)-(2(5a-15))=0

We multiply parentheses

4a-(2(5a-15))-12=0



We calculate terms in parentheses: -(2(5a-15)), so:

2(5a-15)

We multiply parentheses

10a-30

Back to the equation:

-(10a-30)



We get rid of parentheses

4a-10a+30-12=0

We add all the numbers together, and all the variables

-6a+18=0

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

-6a=-18

a=-18/-6

a=+3

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