3x-x=800

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Solution for 3x-x=800 equation: 



3x-x=800

We move all terms to the left:

3x-x-(800)=0

We add all the numbers together, and all the variables

2x-800=0

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

2x=800

x=800/2

x=400

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