x-1+7x=15

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Solution for x-1+7x=15 equation: 



x-1+7x=15

We move all terms to the left:

x-1+7x-(15)=0

We add all the numbers together, and all the variables

8x-16=0

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

8x=16

x=16/8

x=2

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