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2(9n-1)+7(n+6)=-60 yahoo

Sagot :

18n+-2+7n+42=-60
18n+7n
is
25n
25n+40=-60
subtract 40
25n=-20
n=-20/25 simplifies to n=-4/5
Distribute: 18n-2+7n+42=-60
Add like Terms: 25n+40=-60
Subtract 40: 25n=-20
Divide by 25: n=-20/25
Simplify: n=4/5 OR 0.8