2/x+1 - 1/x =4/x tolongin dong (:

2/(x+1) - 1/x = 4/x
(2x - 1(x+1) / (x+1)x = 4/x
(2x - x - 1) / (x²+x) = 4/x
x(x - 1) = 4(x² + x)
x² - x = 4x² + 4x
4x² - x² + 4x + x = 0
3x² + 5x = 0
x(3x + 5) = 0
3x + 5 = 0
3x = -5
x = - 5/3

Semoga berguna +_+