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7(a+1)-3a=5a+4(2a-1)
We move all terms to the left:
7(a+1)-3a-(5a+4(2a-1))=0
We add all the numbers together, and all the variables
-3a+7(a+1)-(5a+4(2a-1))=0
We multiply parentheses
-3a+7a-(5a+4(2a-1))+7=0
We calculate terms in parentheses: -(5a+4(2a-1)), so:We add all the numbers together, and all the variables
5a+4(2a-1)
We multiply parentheses
5a+8a-4
We add all the numbers together, and all the variables
13a-4
Back to the equation:
-(13a-4)
4a-(13a-4)+7=0
We get rid of parentheses
4a-13a+4+7=0
We add all the numbers together, and all the variables
-9a+11=0
We move all terms containing a to the left, all other terms to the right
-9a=-11
a=-11/-9
a=1+2/9
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