X+3x+(3x-10)=130

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Solution for X+3x+(3x-10)=130 equation: 



X+3X+(3X-10)=130

We move all terms to the left:

X+3X+(3X-10)-(130)=0

We add all the numbers together, and all the variables

4X+(3X-10)-130=0

We get rid of parentheses

4X+3X-10-130=0

We add all the numbers together, and all the variables

7X-140=0

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

7X=140

X=140/7

X=20

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