Question

10) o valor de 3/4 + 2/5 __ 1/2 é:

a) 4/7

b) 4/20

c ) 13/20​

Answer 1

Resposta:

c) 13/20

Explicação passo-a-passo:

3/4 + 2/5 + 1/2 = 15/20 + 8/20 + 10/20 = 33/20

3/4 + 2/5 - 1/2 = 15/20 + 8/20 - 10/20 = 13/20