(2n+12)+(3n-7)=90

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Solution for (2n+12)+(3n-7)=90 equation: 



(2n+12)+(3n-7)=90

We move all terms to the left:

(2n+12)+(3n-7)-(90)=0

We get rid of parentheses

2n+3n+12-7-90=0

We add all the numbers together, and all the variables

5n-85=0

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

5n=85

n=85/5

n=17

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