3/x-10+1/3=9/3x-30

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Solution for 3/x-10+1/3=9/3x-30 equation:



3/x-10+1/3=9/3x-30
We move all terms to the left:
3/x-10+1/3-(9/3x-30)=0
Domain of the equation: x!=0
x∈R
Domain of the equation: 3x-30)!=0
x∈R
We get rid of parentheses
3/x-9/3x+30-10+1/3=0
We calculate fractions
81x/27x^2+(-9x)/27x^2+x/27x^2+30-10=0
We add all the numbers together, and all the variables
81x/27x^2+(-9x)/27x^2+x/27x^2+20=0
We multiply all the terms by the denominator
81x+(-9x)+x+20*27x^2=0
We add all the numbers together, and all the variables
82x+(-9x)+20*27x^2=0
Wy multiply elements
540x^2+82x+(-9x)=0
We get rid of parentheses
540x^2+82x-9x=0
We add all the numbers together, and all the variables
540x^2+73x=0
a = 540; b = 73; c = 0;
Δ = b2-4ac
Δ = 732-4·540·0
Δ = 5329
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{5329}=73$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(73)-73}{2*540}=\frac{-146}{1080} =-73/540 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(73)+73}{2*540}=\frac{0}{1080} =0 $

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