800+3x=7x

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Solution for 800+3x=7x equation: 



800+3x=7x

We move all terms to the left:

800+3x-(7x)=0

We add all the numbers together, and all the variables

-4x+800=0

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

-4x=-800

x=-800/-4

x=+200

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