3x+200=7x

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Solution for 3x+200=7x equation: 



3x+200=7x

We move all terms to the left:

3x+200-(7x)=0

We add all the numbers together, and all the variables

-4x+200=0

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

-4x=-200

x=-200/-4

x=+50

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