2.5=(1.25+x)/(2-x)

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Solution for 2.5=(1.25+x)/(2-x) equation: 


D( x )

2-x = 0

2-x = 0

2-x = 0

2-x = 0 // - 2

-x = -2 // * -1

x = 2

x in (-oo:2) U (2:+oo)

2.5 = (x+1.25)/(2-x) // - (x+1.25)/(2-x)

2.5-((x+1.25)/(2-x)) = 0

(-1*(x+1.25))/(2-x)+2.5 = 0

(-1*(x+1.25))/(2-x)+(2.5*(2-x))/(2-x) = 0

2.5*(2-x)-1*(x+1.25) = 0

3.75-3.5*x = 0

(3.75-3.5*x)/(2-x) = 0

(3.75-3.5*x)/(2-x) = 0 // * 2-x

3.75-3.5*x = 0

3.75-3.5*x = 0 // - 3.75

-3.5*x = -3.75 // : -3.5

x = -3.75/(-3.5)

x = 1.07142857

x = 1.07142857

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