Bonjour j’ai un devoir de maths est-ce que vous pouvez m aidez svp

Bonjour

42)

a. 4/5 = (4 x 3) / (5 x 3) = 12/15

b. 5/9 = (5 x 4) / (9 x 4) = 20/36

c. 0,5/2,6 = (0,5 x 10) / (2,6 x 10) = 5/26

d. 45/25 = (9 x 5) / (5 x 5) = 9/5.

43)

a. 6/8 = (6 : 2) / (8 : 2) = 3/4

b. 10/25 = (10 : 5) / (25 : 5) = 2/5

c. 9/15 = (9 : 3) / (12 : 3) = 3/4

d. 42/14 = (42 : 14) / (14 : 14) = 3.

44)

a. 8/5 = (8 x 9) / (5 x 9) = 72/45

b. 2/3 = (2 x 5) / (3 x 5) = 10/15

c. 1/6 = (1 x 3) / (6 x 3) = 3/18

d. 8/12 = (8 : 4) / (12 : 4) = 2/3

e. 6/10 = (2 x 3) / (5 x 3) = 2/5

f. 12/27 = (4 x 3)  /(9 x 3) = 4/9.