3x-x=13+21

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Solution for 3x-x=13+21 equation: 



3x-x=13+21

We move all terms to the left:

3x-x-(13+21)=0

We add all the numbers together, and all the variables

3x-x-34=0

We add all the numbers together, and all the variables

2x-34=0

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

2x=34

x=34/2

x=17

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