Question

Calcule o valor da expressão:(1/2-1/3)-(1/6-1/10)=

Answer 1

(1/2-1/3)-(1/6-1/10)=
1/2 - 1/3 - 1/6 +1/10 = ---mmc(2,3,6,10) = 30
15/30 - 10/30 - 5/30 + 3/30 = 3/30 = 1/10

Answer 2

resolver o primeiro os  parenteses
1/2-1/3 mmc (2,3)=6
3/6-2/6=1/6
1/6-1/10 mmc (6,10)=30
5/30-3/30=2/30

1/6-2/30 mmc (6,30)= 30
 5/30-2/30=3/30 simplificando por 3 = 1/10

Resposta
1/10