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(20+y)-y=418
We move all terms to the left:
(20+y)-y-(418)=0
We add all the numbers together, and all the variables
(y+20)-y-418=0
We add all the numbers together, and all the variables
-1y+(y+20)-418=0
We get rid of parentheses
-1y+y+20-418=0
We add all the numbers together, and all the variables
-398!=0
There is no solution for this equation
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