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-77=7(g-81)
We move all terms to the left:
-77-(7(g-81))=0
We calculate terms in parentheses: -(7(g-81)), so:We get rid of parentheses
7(g-81)
We multiply parentheses
7g-567
Back to the equation:
-(7g-567)
-7g+567-77=0
We add all the numbers together, and all the variables
-7g+490=0
We move all terms containing g to the left, all other terms to the right
-7g=-490
g=-490/-7
g=+70
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