180-n=4(90-n)

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Solution for 180-n=4(90-n) equation: 



180-n=4(90-n)

We move all terms to the left:

180-n-(4(90-n))=0

We add all the numbers together, and all the variables

-n-(4(-1n+90))+180=0

We add all the numbers together, and all the variables

-1n-(4(-1n+90))+180=0



We calculate terms in parentheses: -(4(-1n+90)), so:

4(-1n+90)

We multiply parentheses

-4n+360

Back to the equation:

-(-4n+360)



We get rid of parentheses

-1n+4n-360+180=0

We add all the numbers together, and all the variables

3n-180=0

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

3n=180

n=180/3

n=60

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