3x+(7x-21)+(4x-9)=180

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Solution for 3x+(7x-21)+(4x-9)=180 equation: 



3x+(7x-21)+(4x-9)=180

We move all terms to the left:

3x+(7x-21)+(4x-9)-(180)=0

We get rid of parentheses

3x+7x+4x-21-9-180=0

We add all the numbers together, and all the variables

14x-210=0

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

14x=210

x=210/14

x=15

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