Question

Oblicz oblicz oblicz zad.5

Answer 1

Odpowiedź:

a)

20/21 - 1/3 = 20/21 - 7/21 = 13/21

b)

5/12 + 2 3/8 = 10/24 + 2 9/24 = 2 19/24

c)

25/3 * 9/35 = 5 * 3/7 = 15/7 = 2 1/7

d)

5/16 : 2 1/12 = 5/16 : 25/12 = 5/16 * 12/25 = 1/4 * 3/5 = 3/20

e)

5/6 + (-0,75) = 5/6 - 3/4 = 10/12 - 9/12 = 1/12

f)

3 1/25 - 0,44 = 3,4 - 0,44 = 2,96

g)

-5/6 * (-2,4) = 5/6 * 24/10 = 4/2 = 2

h)

-0,15 : (-9/16) = 15/100 * 16/9 = 3/20 * 16/9 = 1/5 * 4/3 = 4/15

Szczegółowe wyjaśnienie: