7x-x-1=4=7x+21

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Solution for 7x-x-1=4=7x+21 equation: 



7x-x-1=4=7x+21

We move all terms to the left:

7x-x-1-(4)=0

We add all the numbers together, and all the variables

6x-5=0

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

6x=5

x=5/6

x=5/6

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