Jika p=2/3,q =3/4, r =5/6 maka hitunglah nilai dari :a pq +pr b pr +qr c pq : r d. qr : p

a. pq + pr
(2/3 x 3/4) + (2/3 x 5/6)
1/2 + 5/9
9/18 + 10/18
19/18
= 1 1/18

b. pr + qr
5/9 + (3/4 × 5/6)
5/9 + 5/8
40/72 + 45/72
85/72
1 13/72

c. pq : r
1/2 : 5/6
1/2 x 6/5
3/5

d. qr : p
5/8 : 2/3
5/8 x 3/2
15/16