101-2x=81

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Solution for 101-2x=81 equation: 



101-2x=81

We move all terms to the left:

101-2x-(81)=0

We add all the numbers together, and all the variables

-2x+20=0

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

-2x=-20

x=-20/-2

x=+10

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