-5(1+n)-5(-3n+7)=20

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Solution for -5(1+n)-5(-3n+7)=20 equation: 



-5(1+n)-5(-3n+7)=20

We move all terms to the left:

-5(1+n)-5(-3n+7)-(20)=0

We add all the numbers together, and all the variables

-5(n+1)-5(-3n+7)-20=0

We multiply parentheses

-5n+15n-5-35-20=0

We add all the numbers together, and all the variables

10n-60=0

We move all terms containing n to the left, all other terms to the right

10n=60

n=60/10

n=6

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