Question

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Answer 1

Resposta:

b) 28/15;f) 21/2; j) 3/8; n) 14/25; r) 2/3.

Explicação passo a passo:

b) 4/3 : 5/7 =

4/3 x 7/5 =

28/15.

f) 3 : 2/7 =

3 x 7/2 =

21/2.

j) 3/8 : 1 =

3/8 x 1 =

3/8.

n) 2/5 : 5/7 =

2/5 x 7/5 =

14/25.

r) 2/9 : 3/9 =

2/9 x 9/3 =

18/27 = 2/3.