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13=6(7x-9)
We move all terms to the left:
13-(6(7x-9))=0
We calculate terms in parentheses: -(6(7x-9)), so:We get rid of parentheses
6(7x-9)
We multiply parentheses
42x-54
Back to the equation:
-(42x-54)
-42x+54+13=0
We add all the numbers together, and all the variables
-42x+67=0
We move all terms containing x to the left, all other terms to the right
-42x=-67
x=-67/-42
x=1+25/42
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