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75=a+(2a-5)
We move all terms to the left:
75-(a+(2a-5))=0
We calculate terms in parentheses: -(a+(2a-5)), so:We get rid of parentheses
a+(2a-5)
We get rid of parentheses
a+2a-5
We add all the numbers together, and all the variables
3a-5
Back to the equation:
-(3a-5)
-3a+5+75=0
We add all the numbers together, and all the variables
-3a+80=0
We move all terms containing a to the left, all other terms to the right
-3a=-80
a=-80/-3
a=26+2/3
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