x-2x=77

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Solution for x-2x=77 equation: 



x-2x=77

We move all terms to the left:

x-2x-(77)=0

We add all the numbers together, and all the variables

-1x-77=0

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

-x=77

x=77/-1

x=-77

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