75+105+(6x-21)=180

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Solution for 75+105+(6x-21)=180 equation: 



75+105+(6x-21)=180

We move all terms to the left:

75+105+(6x-21)-(180)=0

We add all the numbers together, and all the variables

(6x-21)=0

We get rid of parentheses

6x-21=0

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

6x=21

x=21/6

x=3+1/2

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