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20-2x=1820-2x=18
We move all terms to the left:
20-2x-(1820-2x)=0
We add all the numbers together, and all the variables
-2x-(-2x+1820)+20=0
We get rid of parentheses
-2x+2x-1820+20=0
We add all the numbers together, and all the variables
-1800!=0
There is no solution for this equation
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