Question

1pe2 - 1pe4+5pe6-3pe8

Answer 1

1/2-1/4+5/6-3/8 ⇒aducem la acelasi numitor.Numitor comun:24
12/24-6/24+20/24-9/24=6/24+20/24-9/24=26/24-9/24=17/24.

Answer 2

$\displaystyle \frac{1}{2} - \frac{1}{4} + \frac{5}{6} - \frac{3}{8} = \frac{12-6+20-9}{24} = \frac{17}{24}$