Vă rog! ! ! ! ! ! ! ! !

x-1/2 + x-1/3 + x-1/4 =2 | * 12
12 * x-1/2 + 12 * x-1/3 + 12 * x-1/4 = 12 * 2
6(x-1) + 4(x-1) + 3(x-1) = 24
6x - 6 + 3x - 4 + 3x - 3 + 24
13x - 13 + 24
13x + 24 + 13
13 x = 37 | : 13
x = 37/13
* = inmultire :)