(5n+21)+(4n+24)=180

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Solution for (5n+21)+(4n+24)=180 equation: 



(5n+21)+(4n+24)=180

We move all terms to the left:

(5n+21)+(4n+24)-(180)=0

We get rid of parentheses

5n+4n+21+24-180=0

We add all the numbers together, and all the variables

9n-135=0

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

9n=135

n=135/9

n=15

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