Question

Efetue:

a) 1/3 + 7/3=
b) 2/5 - 3/7=
c) - 2 . 2/3 + 1/4=
d) /3 - 3/4 + 1/5=
e) 8/5 . 4/3=
f) (- 1/3) . (- 6/8)
g) 12/10 ÷ 3/8=
h) - 2/3 ÷ 2/7= ​

Answer 1

Resposta:

a) 8/3

b) -1/35

c) - 13/12

d) 49/20

e)  32/15

f)  1/4

g) 16/5

h) -7/3

Explicação passo-a-passo:

a) 1/3 + 7/3= (1+7)/3 = 8/3

b) 2/5 - 3/7= (14 - 15)/35 = -1/35

c) - 2 . 2/3 + 1/4= -4/3 + 1/4 = (-16+3)/12 = - 13/12

d) /3 - 3/4 + 1/5= (12-3)/4 + 1/5 = 9/4 + 1/5 = (45+4)/20 = 49/20

e) 8/5 . 4/3= 32/15

f) (- 1/3) . (- 6/8) = 6/24 = 2/8 = 1/4

g) 12/10 ÷ 3/8= 12/10 * 8/3 = 96/30 = 32/10 = 16/5

h) - 2/3 ÷ 2/7= ​- 2/3*7/2 = - 14/6 = -7/3