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1/20+3/20+2/20+9/20+x=100
We move all terms to the left:
1/20+3/20+2/20+9/20+x-(100)=0
determiningTheFunctionDomain x-100+1/20+3/20+2/20+9/20=0
We multiply all the terms by the denominator
x*20+1+3+2+9-100*20=0
We add all the numbers together, and all the variables
x*20-1985=0
Wy multiply elements
20x-1985=0
We move all terms containing x to the left, all other terms to the right
20x=1985
x=1985/20
x=99+1/4
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