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(21+x)/x=19/5
We move all terms to the left:
(21+x)/x-(19/5)=0
Domain of the equation: x!=0We add all the numbers together, and all the variables
x∈R
(x+21)/x-(+19/5)=0
We get rid of parentheses
(x+21)/x-19/5=0
We calculate fractions
(5x+105)/5x+(-19x)/5x=0
We multiply all the terms by the denominator
(5x+105)+(-19x)=0
We get rid of parentheses
5x-19x+105=0
We add all the numbers together, and all the variables
-14x+105=0
We move all terms containing x to the left, all other terms to the right
-14x=-105
x=-105/-14
x=7+1/2
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