n+20+(2n-18)=137

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Solution for n+20+(2n-18)=137 equation: 



n+20+(2n-18)=137

We move all terms to the left:

n+20+(2n-18)-(137)=0

We add all the numbers together, and all the variables

n+(2n-18)-117=0

We get rid of parentheses

n+2n-18-117=0

We add all the numbers together, and all the variables

3n-135=0

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

3n=135

n=135/3

n=45

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