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56=-4(5n+5)+n
We move all terms to the left:
56-(-4(5n+5)+n)=0
We calculate terms in parentheses: -(-4(5n+5)+n), so:We get rid of parentheses
-4(5n+5)+n
We add all the numbers together, and all the variables
n-4(5n+5)
We multiply parentheses
n-20n-20
We add all the numbers together, and all the variables
-19n-20
Back to the equation:
-(-19n-20)
19n+20+56=0
We add all the numbers together, and all the variables
19n+76=0
We move all terms containing n to the left, all other terms to the right
19n=-76
n=-76/19
n=-4
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