Question

Efetue as subtraçoes
a)5/4 - 1/2
b)3/5 - 2/7
c)8/10 - 1/5
d)5/6 - 2/3
e)4/3 - 1/2
f)13/4 - 5/6
g)7/8 - 1/6
h)5/4 - 1/2

Answer 1

A) 5/4 - 1/2 Mmc de 2 e 4 = 4 5/4 - 2/4 = 3/4 B) 3/5 - 2/7 Mmc de 5 e 7 = 35 21/35 - 10/35 = 11/35 C) 8/10 - 2/5 Mmc de 10 e 5 = 10 8/10 - 2/10 = 6/10 simplificando por 2 = 3/5 D) 5/6 - 2/3 Mmc de 3 e 6 = 6 5/6 - 4/6 = 1/6 E) 4/3 - 1/2 Mmc de 2 e 3 = 6 8/6 - 3/6 = 5/6 F) 13/4 - 5/6 Mmc de 4 e 6 = 12 39/12 - 10/12 = 29/12 G) 7/8 - 1/6 Mmc de 6 e 8 = 24 21/24 - 4/24 = 17/24 H) 5/4 - 1/2 Mmc de 2 e 4 = 4 5/4 - 2/4 = 3/4