57=3(2a+5)

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Solution for 57=3(2a+5) equation:



57=3(2a+5)
We move all terms to the left:
57-(3(2a+5))=0
We calculate terms in parentheses: -(3(2a+5)), so:
3(2a+5)
We multiply parentheses
6a+15
Back to the equation:
-(6a+15)
We get rid of parentheses
-6a-15+57=0
We add all the numbers together, and all the variables
-6a+42=0
We move all terms containing a to the left, all other terms to the right
-6a=-42
a=-42/-6
a=+7

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