28=120+(n-1)4

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Solution for 28=120+(n-1)4 equation: 



28=120+(n-1)4

We move all terms to the left:

28-(120+(n-1)4)=0



We calculate terms in parentheses: -(120+(n-1)4), so:

120+(n-1)4

determiningTheFunctionDomain
(n-1)4+120

We multiply parentheses

4n-4+120

We add all the numbers together, and all the variables

4n+116

Back to the equation:

-(4n+116)



We get rid of parentheses

-4n-116+28=0

We add all the numbers together, and all the variables

-4n-88=0

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

-4n=88

n=88/-4

n=-22

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