240/x=(240/x+20)+2 solve the question
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240/x = (240/(x + 20)) + 2
240/x - (240/(x + 20)) = 2
120/x - (120/(x + 20)) = 1
120[(x + 20 - x)/(x*(x + 20))] = 1
120[(20)/(x*(x + 20))] = 1
120*20 = x*(x + 20)
x^2 + 20x - 2400 = 0
x^2 + 60x - 40x - 2400 = 0
x(x + 60) - 40(x + 60) = 0
(x - 40)(x + 60) = 0
x - 40 = 0, x + 60 = 0
x = 40, -60 ——> Answer
240/x - (240/(x + 20)) = 2
120/x - (120/(x + 20)) = 1
120[(x + 20 - x)/(x*(x + 20))] = 1
120[(20)/(x*(x + 20))] = 1
120*20 = x*(x + 20)
x^2 + 20x - 2400 = 0
x^2 + 60x - 40x - 2400 = 0
x(x + 60) - 40(x + 60) = 0
(x - 40)(x + 60) = 0
x - 40 = 0, x + 60 = 0
x = 40, -60 ——> Answer
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