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D( x )
x-2 = 0
x-2 = 0
x-2 = 0
x-2 = 0 // + 2
x = 2
x in (-oo:2) U (2:+oo)
3/(x-2)-(7/5) = 2 // - 2
3/(x-2)-(7/5)-2 = 0
3/(x-2)-7/5-2 = 0
(3*5)/(5*(x-2))+(-7*(x-2))/(5*(x-2))+(-2*5*(x-2))/(5*(x-2)) = 0
3*5-7*(x-2)-2*5*(x-2) = 0
20-7*x-10*x+29 = 0
49-17*x = 0
(49-17*x)/(5*(x-2)) = 0
(49-17*x)/(5*(x-2)) = 0 // * 5*(x-2)
49-17*x = 0
49-17*x = 0 // - 49
-17*x = -49 // : -17
x = -49/(-17)
x = 49/17
x = 49/17
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