o valor da expressão numérica 2/5×[1/2-1/4 é: a)2/10 b)1/10 c)1/20 d)3/10​

Resposta :

Oie, tudo bom?

Resposta: b) 1/10.

= 2/5 . [1/2 - 1/4]

mmc(2 , 4) = 4

= 2/5 . [(2 - 1)/4]

= 2/5 . 1/4

mdc(2 , 4) = 2

= 1/5 . 1/2

= (1 . 1)/(5 . 2)

= 1/10

Att. NLE Top Shotta

Oie, tudo bom?

Resposta: b) 1/10.

= 2/5 . [1/2 - 1/4]

mmc(2 , 4) = 4

= 2/5 . [(2 - 1)/4]

= 2/5 . 1/4

mdc(2 , 4) = 2

= 1/5 . 1/2

= (1 . 1)/(5 . 2)

= 1/10

Att. NLE Top Shotta