x+7x=168

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Solution for x+7x=168 equation: 



x+7x=168

We move all terms to the left:

x+7x-(168)=0

We add all the numbers together, and all the variables

8x-168=0

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

8x=168

x=168/8

x=21

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