6x+x=400

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Solution for 6x+x=400 equation: 



6x+x=400

We move all terms to the left:

6x+x-(400)=0

We add all the numbers together, and all the variables

7x-400=0

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

7x=400

x=400/7

x=57+1/7

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