-13=4-7n

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Solution for -13=4-7n equation: 



-13=4-7n

We move all terms to the left:

-13-(4-7n)=0

We add all the numbers together, and all the variables

-(-7n+4)-13=0

We get rid of parentheses

7n-4-13=0

We add all the numbers together, and all the variables

7n-17=0

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

7n=17

n=17/7

n=2+3/7

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