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(19x+81)/20=100
We move all terms to the left:
(19x+81)/20-(100)=0
We multiply all the terms by the denominator
(19x+81)-100*20=0
We add all the numbers together, and all the variables
(19x+81)-2000=0
We get rid of parentheses
19x+81-2000=0
We add all the numbers together, and all the variables
19x-1919=0
We move all terms containing x to the left, all other terms to the right
19x=1919
x=1919/19
x=101
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