Question

calcule as frações :​

Answer 1

Resposta:

a) 2 . 3/5 - 1/10 =

multiplique 2 x 3

6/5 - 1/10 =

diminua 6 - 1 e faça o MMC de 5 e 10

= 5/11

b) 3 . 1/2 - 1/6 =

multiplique 3 x 1

3/2 - 2/6 =

diminua 3 - 2 e faça o MMC de 2 e 6

= 1/7

c) 1 . 1/2 + 1 . 1/2 =

multiplique 1 x 1

1/2 + 1/2

Some 1 + 1 e conserve o denomidanor (2)

= 2/2

d) 1/3 + 1/2 + 3/1 =

some 1 + 1 + 3 e faça o MMC de 3 e 2

= 5/23