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49=7(n-81)
We move all terms to the left:
49-(7(n-81))=0
We calculate terms in parentheses: -(7(n-81)), so:We get rid of parentheses
7(n-81)
We multiply parentheses
7n-567
Back to the equation:
-(7n-567)
-7n+567+49=0
We add all the numbers together, and all the variables
-7n+616=0
We move all terms containing n to the left, all other terms to the right
-7n=-616
n=-616/-7
n=+88
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