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40x+100=2x+300
We move all terms to the left:
40x+100-(2x+300)=0
We get rid of parentheses
40x-2x-300+100=0
We add all the numbers together, and all the variables
38x-200=0
We move all terms containing x to the left, all other terms to the right
38x=200
x=200/38
x=5+5/19
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