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280-x=20x/300
We move all terms to the left:
280-x-(20x/300)=0
We add all the numbers together, and all the variables
-x-(+20x/300)+280=0
We add all the numbers together, and all the variables
-1x-(+20x/300)+280=0
We get rid of parentheses
-1x-20x/300+280=0
We multiply all the terms by the denominator
-1x*300-20x+280*300=0
We add all the numbers together, and all the variables
-20x-1x*300+84000=0
Wy multiply elements
-20x-300x+84000=0
We add all the numbers together, and all the variables
-320x+84000=0
We move all terms containing x to the left, all other terms to the right
-320x=-84000
x=-84000/-320
x=262+1/2
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