X+2x+3x=20+4x

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Solution for X+2x+3x=20+4x equation: 



X+2X+3X=20+4X

We move all terms to the left:

X+2X+3X-(20+4X)=0

We add all the numbers together, and all the variables

X+2X+3X-(4X+20)=0

We add all the numbers together, and all the variables

6X-(4X+20)=0

We get rid of parentheses

6X-4X-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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