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-57=-5(5-6n)-8(4-5n)
We simplify the equation to the form, which is simple to understand
-57=-5(5-6n)-8(4-5n)
Reorder the terms in parentheses
-57=+(-25+30n)-8*(4-5n)
Remove unnecessary parentheses
-57=-25+30n-8+*(+4-5n+)
Reorder the terms in parentheses
-57=-25+30n+(-32+40n)
Remove unnecessary parentheses
-57=-25+30n-32+40n
We move all terms containing n to the left and all other terms to the right.
-30n-40n=-25-32+57
We simplify left and right side of the equation.
-70n=0
We divide both sides of the equation by -70 to get n.
n=-0
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