113.5=7.75n+4.50(18-n)

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Solution for 113.5=7.75n+4.50(18-n) equation: 



113.5=7.75n+4.50(18-n)

We move all terms to the left:

113.5-(7.75n+4.50(18-n))=0

We add all the numbers together, and all the variables

-(7.75n+4.50(-1n+18))+113.5=0



We calculate terms in parentheses: -(7.75n+4.50(-1n+18)), so:

7.75n+4.50(-1n+18)

We multiply parentheses

7.75n-4.5n+81

We add all the numbers together, and all the variables

3.25n+81

Back to the equation:

-(3.25n+81)



We get rid of parentheses

-3.25n-81+113.5=0

We add all the numbers together, and all the variables

-3.25n+32.5=0

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

-3.25n=-32.5

n=-32.5/-3.25

n=+10

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