Question

1)
2, 5 ○4 1/2 - 5 17/20 :0, 9 = ?
2)
(5/6+1/3) : (2 2/3 - 1, 75) = ?
Proszę

Answer 1

Zad 1
2,5 * 4 1/2 - 5 17/20 : 0,9 = 25/10 * 9/2 - 117/20 * 10/9 = 225/20 - 13/2 =
= 11 1/4 - 6 1/2 = 11 1/4 - 6 2/4 = 10 5/4 - 6 2/4 = 4 3/4
zad 2
(5/6 + 1/3) : (2 2/3 - 1,75) = (5/6 + 2/6) : (2 2/3 - 1 3/4) = 7/6 : (2 8/12 - 1 9/12) =
= 7/6 : (1 20/12 - 1 9/12) = 7/6 : 11/12 = 7/6 * 12/11 = 14/11 = 1 3/11