7.50+(1.35n)=12.90

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Solution for 7.50+(1.35n)=12.90 equation: 



7.50+(1.35n)=12.90

We move all terms to the left:

7.50+(1.35n)-(12.90)=0

We add all the numbers together, and all the variables

(+1.35n)+7.50-(12.9)=0

We add all the numbers together, and all the variables

(+1.35n)-5.4=0

We get rid of parentheses

1.35n-5.4=0

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

1.35n=5.4

n=5.4/1.35

n=4

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