Question

calcule com a conta e o resultado esses exercicios

Answer 1

Resposta:

9/20

Explicação passo a passo:

1/2 x 9/10 = 1 x 9/ 2 x 10 = 9/ 20

1/3 x 2/3 = 1 x 2/ 3 x 3 = 2/9

4/6 x 3/8 = 1/2 x 1/2 = 1/4

2/3 + 5/4 = 2 x 4/ 3 x 4 + 5 x 3 /4 x 3 =

8 + 15/ 12 = 23/12

2/3 - 1/3 = 2 - 1 / 3 = 1/3

7/5 - 1/5 = 7 - 1 / 5 = 6/5

28/28 - 27/28 = 28 - 27 / 28 = 1/28

2/3 ÷ 7/5 = 2/3 x 5/7 = 10/21

1/3 ÷ 10/5 = 1/3 x 5/10 = 1/3 x 1/2 = 1/6

5/3 ÷ 15/8= 5/3 x 8/15 = 1/3 x 8/3 = 8/9

perdao se esqueci alguma!!!