Question

04 – Efetue as operações:
a) 2/3 + 5/7 =
b) 1/2 - 5/2 =
c) 3/4 * 1/4 =
d) 1/3 – 1/5 =
e) 2/3 * 7/5 =
f) 1/5 : 2/4 =
g) 3/4 : 2/4 =

Answer 1

Resposta:

Explicação passo-a-passo:

a) 2/3 + 5/7 =  (14+15)/21 = 29/21

b) 1/2 - 5/2 = (1 - 5)/2 = -4/2 = -2

c) 3/4 * 1/4 = 3/16

d) 1/3 – 1/5 = (5 - 3)/15  = 2/15

e) 2/3 * 7/5 = 14/15

f) 1/5 : 2/4 = = 1/5 * 4/2 = 4/10 = 2/5

g) 3/4 : 2/4 = 3/4 * 4/2 = 12/8 = 3/2