2x+200=400

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Solution for 2x+200=400 equation: 



2x+200=400

We move all terms to the left:

2x+200-(400)=0

We add all the numbers together, and all the variables

2x-200=0

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

2x=200

x=200/2

x=100

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