x-2x-1=3

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Solution for x-2x-1=3 equation: 



x-2x-1=3

We move all terms to the left:

x-2x-1-(3)=0

We add all the numbers together, and all the variables

-1x-4=0

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

-x=4

x=4/-1

x=-4

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