100=-5+7n

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Solution for 100=-5+7n equation: 



100=-5+7n

We move all terms to the left:

100-(-5+7n)=0

We add all the numbers together, and all the variables

-(7n-5)+100=0

We get rid of parentheses

-7n+5+100=0

We add all the numbers together, and all the variables

-7n+105=0

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

-7n=-105

n=-105/-7

n=+15

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