(x+4)+(x+2)+21=180

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Solution for (x+4)+(x+2)+21=180 equation: 



(x+4)+(x+2)+21=180

We move all terms to the left:

(x+4)+(x+2)+21-(180)=0

We add all the numbers together, and all the variables

(x+4)+(x+2)-159=0

We get rid of parentheses

x+x+4+2-159=0

We add all the numbers together, and all the variables

2x-153=0

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

2x=153

x=153/2

x=76+1/2

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