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(2a+70)=(5a-47)
We move all terms to the left:
(2a+70)-((5a-47))=0
We get rid of parentheses
2a-((5a-47))+70=0
We calculate terms in parentheses: -((5a-47)), so:We get rid of parentheses
(5a-47)
We get rid of parentheses
5a-47
Back to the equation:
-(5a-47)
2a-5a+47+70=0
We add all the numbers together, and all the variables
-3a+117=0
We move all terms containing a to the left, all other terms to the right
-3a=-117
a=-117/-3
a=+39
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