5/(2-x)=7/10

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Solution for 5/(2-x)=7/10 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)

5/(2-x) = 7/10 // - 7/10

5/(2-x)-(7/10) = 0

5/(2-x)-7/10 = 0

(5*10)/(10*(2-x))+(-7*(2-x))/(10*(2-x)) = 0

5*10-7*(2-x) = 0

7*x+36 = 0

(7*x+36)/(10*(2-x)) = 0

(7*x+36)/(10*(2-x)) = 0 // * 10*(2-x)

7*x+36 = 0

7*x+36 = 0 // - 36

7*x = -36 // : 7

x = -36/7

x = -36/7

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