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43)

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

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

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

d. 42/14 = (42 : 14) / (14 : 14) = 3/1 = 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 = (6 : 2) / (10 : 2) = 3/5

f. 12/27 = (12 : 3) / (27 : 3) = 4/9.