X+3x=20+2x

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Solution for X+3x=20+2x equation: 



X+3X=20+2X

We move all terms to the left:

X+3X-(20+2X)=0

We add all the numbers together, and all the variables

X+3X-(2X+20)=0

We add all the numbers together, and all the variables

4X-(2X+20)=0

We get rid of parentheses

4X-2X-20=0

We add all the numbers together, and all the variables

2X-20=0

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

2X=20

X=20/2

X=10

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