Question

BARDZO PROSZĘ O POMOC W ZADANIU DAJE NAJ i DUŻO PUNKTÓW !!!!!!!

Answer 1

Odpowiedź:

zad 12

a)

(1 1/2 + 2 1/5) * 10 = (1 5/10 + 2 2/10) * 10 = 3 7/10 * 10 = 37/10 * 10 = 37

b)

(1 1/5 + 5/6) * 1 7/8 = ( 1 6/30 + 25/30) * 15/8 = 1 31/30 * 15/18 =

= 61/30 * 15/18 = 61/2 * 1/18 = 61/36 = 1 25/36

c)

(14/5 - 21/20) * 4/7 = (56/20 - 21/20) * 4/7 = 35/20 * 4/7 = 5/5 * 1 = 1

d)

(7 1/4 - 2 1/6) : 2 13/24 = (7 3/12 - 2 2/12) : 61/24 = 5 1/12 * 24/61 =

= 61/12 * 24/61 = 1 * 2 = 2

e)

(2 4/15 - 1 1/10) * ( 2/15 + 2/21) = (2 8/30 - 1 3/30) * ( 14/105 + 10/105) =

= 2 5/30 * 24/105 = 2 1/6 * 8/35 = 13/6 * 8/35 = 13/3 * 4/35 = 52/105

f)

( 1 1/16 - 23/24) * ( 8 + 1 3/5) = (1 3/48 - 46/48) * 9 3/5 =

= (51/48 - 46/48)  * 48/5 = 5/48 * 48/5 = 1