Question

Para cada item escreva duas frações equivalentes 8/20 16/36 21/9 42/12 20/30 31/28

Answer 1

Ola Isabellealves21, 

Para cada item, escreva duas fraçoes equivalentes :

8 / 20 = (2 x 4) / (2 x 10) = 4 / 10 = (2 x 2) / (2 x 5) = 2 / 5

16 / 36 = (2 x 8) / (2 x 18) = 8 / 18 = (2 x 4) / (2 x 9) = 4 / 9

21 / 9 = (3 x 7) / (3 x 3) = 7 / 3 = (7 x 2) / (3 x 2) = 14 / 6

42 / 12 = (3 x 14) / (3 x 4) = 14 / 4 = (2 x 7) / (2 x 2) = 7 / 2

20 / 30 = (10 x 2) / (10 x 3) = 2 / 3 = (2 x 2) / (3 x 2) = 4 / 6

31 / 28 = (31 x 2) / (28 x 2) = 62 / 56 = (62 x 10) / (56 x 10) = 620 / 560