(x-21)+(x+13)=180

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Solution for (x-21)+(x+13)=180 equation: 



(x-21)+(x+13)=180

We move all terms to the left:

(x-21)+(x+13)-(180)=0

We get rid of parentheses

x+x-21+13-180=0

We add all the numbers together, and all the variables

2x-188=0

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

2x=188

x=188/2

x=94

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