3x-4=20+x

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Solution for 3x-4=20+x equation: 



3x-4=20+x

We move all terms to the left:

3x-4-(20+x)=0

We add all the numbers together, and all the variables

3x-(x+20)-4=0

We get rid of parentheses

3x-x-20-4=0

We add all the numbers together, and all the variables

2x-24=0

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

2x=24

x=24/2

x=12

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