20-2x=31

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Solution for 20-2x=31 equation: 



20-2x=31

We move all terms to the left:

20-2x-(31)=0

We add all the numbers together, and all the variables

-2x-11=0

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

-2x=11

x=11/-2

x=-5+1/2

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