Question

9) Efetue as subtrações:
a) (+5/7) – (+2/3) = b) (+2/3) – (+1/2) =
c) (+2/3) – (+4/5) = d) (-7/8) – (-3/4) =
e) (-2/5) – (-1/4) = f) (-1/2) – (+5/8) =

AJUDA PFV

Answer 1

Resposta:

a)(+5/7) – (+2/3)=

5 - 2 = 15 - 14 = 1

7 3 21 21

b) (+2/3) – (+1/2) =

2 - 1 = 4 - 3 = 1

3 2 6 6

c) (+2/3) – (+4/5) =

2 - 4 = 10 - 12 = - 2

3 5 15 4

d) (-7/8) – (-3/4) =

7 - 3 = - 28 + 24 = - 4 = - 1

8 4 32 32 8

e) (-2/5) – (-1/4) =

2 - 1 = - 8 + 5 = - 3

5 4 20 20

f) (-1/2) – (+5/8) =

1 - 5 = - 4 - 5 = -9

2 8 8 8