7=5-2n

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Solution for 7=5-2n equation: 



7=5-2n

We move all terms to the left:

7-(5-2n)=0

We add all the numbers together, and all the variables

-(-2n+5)+7=0

We get rid of parentheses

2n-5+7=0

We add all the numbers together, and all the variables

2n+2=0

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

2n=-2

n=-2/2

n=-1

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