5=20-5n

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Solution for 5=20-5n equation: 



5=20-5n

We move all terms to the left:

5-(20-5n)=0

We add all the numbers together, and all the variables

-(-5n+20)+5=0

We get rid of parentheses

5n-20+5=0

We add all the numbers together, and all the variables

5n-15=0

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

5n=15

n=15/5

n=3

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