22.5=1.5(n-1)

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Solution for 22.5=1.5(n-1) equation: 



22.5=1.5(n-1)

We move all terms to the left:

22.5-(1.5(n-1))=0



We calculate terms in parentheses: -(1.5(n-1)), so:

1.5(n-1)

We multiply parentheses

1.5n-1.5

Back to the equation:

-(1.5n-1.5)



We get rid of parentheses

-1.5n+1.5+22.5=0

We add all the numbers together, and all the variables

-1.5n+24=0

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

-1.5n=-24

n=-24/-1.5

n=+16

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