10a=5(a-3)=15

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



10a=5(a-3)=15

We move all terms to the left:

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



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

5(a-3)

We multiply parentheses

5a-15

Back to the equation:

-(5a-15)



We get rid of parentheses

10a-5a+15=0

We add all the numbers together, and all the variables

5a+15=0

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

5a=-15

a=-15/5

a=-3

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