-25=3-7n

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Solution for -25=3-7n equation: 



-25=3-7n

We move all terms to the left:

-25-(3-7n)=0

We add all the numbers together, and all the variables

-(-7n+3)-25=0

We get rid of parentheses

7n-3-25=0

We add all the numbers together, and all the variables

7n-28=0

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

7n=28

n=28/7

n=4

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