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1/5x+14=1/7x+3
We move all terms to the left:
1/5x+14-(1/7x+3)=0
Domain of the equation: 5x!=0
x!=0/5
x!=0
x∈R
Domain of the equation: 7x+3)!=0We get rid of parentheses
x∈R
1/5x-1/7x-3+14=0
We calculate fractions
7x/35x^2+(-5x)/35x^2-3+14=0
We add all the numbers together, and all the variables
7x/35x^2+(-5x)/35x^2+11=0
We multiply all the terms by the denominator
7x+(-5x)+11*35x^2=0
Wy multiply elements
385x^2+7x+(-5x)=0
We get rid of parentheses
385x^2+7x-5x=0
We add all the numbers together, and all the variables
385x^2+2x=0
a = 385; b = 2; c = 0;
Δ = b2-4ac
Δ = 22-4·385·0
Δ = 4
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{4}=2$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(2)-2}{2*385}=\frac{-4}{770} =-2/385 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(2)+2}{2*385}=\frac{0}{770} =0 $
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