5(a-3)+15=10(a-3)

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Solution for 5(a-3)+15=10(a-3) equation: 



5(a-3)+15=10(a-3)

We move all terms to the left:

5(a-3)+15-(10(a-3))=0

We multiply parentheses

5a-(10(a-3))-15+15=0



We calculate terms in parentheses: -(10(a-3)), so:

10(a-3)

We multiply parentheses

10a-30

Back to the equation:

-(10a-30)



We add all the numbers together, and all the variables

5a-(10a-30)=0

We get rid of parentheses

5a-10a+30=0

We add all the numbers together, and all the variables

-5a+30=0

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

-5a=-30

a=-30/-5

a=+6

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