Question

efetue as operações a seguir 1/2-1/5, 3/8+2/15, 10/11-4/5, 1/9+ 1/3​

Answer 1

Resposta:

Explicação passo-a-passo:

a)

1/2-1/5

Mmc (2,5)= 10

= ( 5.1 - 2.1)/10

= (5-2)/10

= 3/10

b)

= 3/8+2/15

Mmc (8,15)= 120

= ( 15.3 + 8.2)/120

= (45+16)/120

= 61/120

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15,8: 2

15, 4: 2

15, 2: 2

15, 1: 3

5,1: 5

1,1

= 2.2.2.3.5

= 8.15

= 120

C)

10/11-4/5

Mmc (5,11)= 55

= (5.10 - 11.4)/55

= (50-44)/55

= 6/55

D)

= 1/9+ 1/3​

= (1.1 + 3.1)/9

= (1+3)/9

= 4/9