70-21n=45-20n

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Solution for 70-21n=45-20n equation: 



70-21n=45-20n

We move all terms to the left:

70-21n-(45-20n)=0

We add all the numbers together, and all the variables

-21n-(-20n+45)+70=0

We get rid of parentheses

-21n+20n-45+70=0

We add all the numbers together, and all the variables

-1n+25=0

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

-n=-25

n=-25/-1

n=+25

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