-0.011=(2(x-140))/(140+x)

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Solution for -0.011=(2(x-140))/(140+x) equation: 


D( x )

x+140 = 0

x+140 = 0

x+140 = 0

x+140 = 0 // - 140

x = -140

x in (-oo:-140) U (-140:+oo)

-0.011 = (2*(x-140))/(x+140) // - (2*(x-140))/(x+140)

-((2*(x-140))/(x+140))-0.011 = 0

-2*(x-140)*(x+140)^-1-0.011 = 0

(-2*(x-140))/(x+140)-0.011 = 0

(-2*(x-140))/(x+140)+(-0.011*(x+140))/(x+140) = 0

-2*(x-140)-0.011*(x+140) = 0

278.46-2.011*x = 0

(278.46-2.011*x)/(x+140) = 0

(278.46-2.011*x)/(x+140) = 0 // * x+140

278.46-2.011*x = 0

278.46-2.011*x = 0 // - 278.46

-2.011*x = -278.46 // : -2.011

x = -278.46/(-2.011)

x = 138.46842367

x = 138.46842367

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