Question

2-Efetue as subtrações:
(Cuidado com o sinal (-) fora dos parênteses)
a) (+5/7) - (+2/3) =
e) (-2/5) - (-1/4) =
b) (+2/3) - (+1/2) =
f) (-1/2) - (+5/8) =
c)(+2/3) - (+4/5) =
g) (+2/3) - ((+1/5) =
d) (-7/8) – (-3/4) =
h) (-2/5) - ( +1/2) =​

Answer 1

Resposta:

a) 5/7 -2/3 = 15-14/21 = 1/21

e) -2/5 + 1/4= -8+5/20 = -3/20

b) 2/3 - 1/2 = 4 -12= -8/ -6 = - 4/3

f) -1/2 - 5/8 =-4-5/8 = -9/8

c)2/3 -4/5 =10-12/15 = -2/15

g) 2/3- 1/5 = 10-3/15 = 7/15

d)-7/8 + 3/4 = -7+6/8 = -1/8

h) -2/5- 1/2 =-4-5/10 = -9/10

Explicação passo-a-passo: