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3/5x=40+2x/80x
We move all terms to the left:
3/5x-(40+2x/80x)=0
Domain of the equation: 5x!=0
x!=0/5
x!=0
x∈R
Domain of the equation: 80x)!=0We add all the numbers together, and all the variables
x!=0/1
x!=0
x∈R
3/5x-(2x/80x+40)=0
We get rid of parentheses
3/5x-2x/80x-40=0
We calculate fractions
(-10x^2)/400x^2+240x/400x^2-40=0
We multiply all the terms by the denominator
(-10x^2)+240x-40*400x^2=0
Wy multiply elements
(-10x^2)-16000x^2+240x=0
We get rid of parentheses
-10x^2-16000x^2+240x=0
We add all the numbers together, and all the variables
-16010x^2+240x=0
a = -16010; b = 240; c = 0;
Δ = b2-4ac
Δ = 2402-4·(-16010)·0
Δ = 57600
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{57600}=240$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(240)-240}{2*-16010}=\frac{-480}{-32020} =24/1601 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(240)+240}{2*-16010}=\frac{0}{-32020} =0 $
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