Question

REPEDE!
1. Efectuați:
a) 12/20 • 4/6 • 5/22 =
b) 22/36 • 1/3 • 81/11 =
c) 3 • 1/4 • 1 1/3 • 1/13
2. Aduceți la forma ireductibilă:
a) 3/25 • 5/9 =
b) 8/12 • 9/28
c) 4/11 • 2 4/9 =

Answer 1

Sper ca imi intelegi scrisul....

Answer 2

1)

a) 12/20 × 4/6 × 5/22 = 2/20 × 4 × 5/22 = 2/5 × 5/22 = 2 × 1/22 = 1/11

b) 22/36 × 1/3 × 81/11 = 2/36 × 1/3 × 81 = 2/36 × 27 = 1/18 × 27 = 1/2 × 3 = 3/2

c) 3 × 1/4 × 1 1/3 × 1/13 = 3 × 1/4 × 4/3 × 1/13 = 1/4 × 4 × 1/13 = 1/13


2)   

a) 3/25 × 5/9 =  1/5 × 1/3 = 1/15

b)  8/12 × 9/28 = 2/3 × 9/28 = 3/14 

c)  4/11 ×  2 4/9 = 4/11 × 22/9 = 4 × 2/9 = 8/9