Respostas
Resposta:
Explicação passo-a-passo:
..a) = - 5/8 - 3/8 = - 8/8 = - 1
.
. b) = 1/5 - [ 2/3 - ( 4/12 - 1/12) ] + 5/6
. = 1/5 - [ 2/3 - 3/12 ] + 5/6
. = 1/5 - [ 8/12 - 3/12 ] + 5/6
. = 1/5 - 5/12 + 5/6 (m.m.c. = 60)
. = 12/60 - 25/60 + 50/60
. = 62/60 - 25/60
. = 37/60
.
. c) = - 3 . 5 / 5 . 6 = - 3/6 = - 1/2
.
. d) = - 2 . 3 . 1 / 4 . 6 = - 6 / 4 . 6 = - 1/4
.
. e) = - 3/4 - 1/2 . 4/1 = - 3/4 - 2/1
. = - 3/4 - 8/4 = - 11/4
.
. f) = [ - 3/8 - (- 1/2 . 3/2) ] : (- 3/4)
. = [ - 3/8 - (- 3/4) ] : (- 3/4)
. = [ - 3/8 + 3/4 ] : (- 3/4)
. = [ - 3/8 + 6/8 ] : (- 3/4)
. = + 3/8 : (- 3/4)
. = - 3/8 . 4/3
. = - 1/2
.
(Espero ter colaborado)
Resposta:
a) = - 5/8 - 3/8 = - 8/8 = - 1
b) = 1/5 - [ 2/3 - ( 4/12 - 1/12) ] + 5/6
= 1/5 - [ 2/3 - 3/12 ] + 5/6
= 1/5 - [ 8/12 - 3/12 ] + 5/6
= 1/5 - 5/12 + 5/6 (m.m.c. = 60)
= 12/60 - 25/60 + 50/60
= 62/60 - 25/60
= 37/60
c) = - 3 . 5 / 5 . 6 = - 3/6 = - 1/2
d) = - 2 . 3 . 1 / 4 . 6 = - 6 / 4 . 6 = - 1/4
e) = - 3/4 - 1/2 . 4/1 = - 3/4 - 2/1
= - 3/4 - 8/4 = - 11/4
f) = [ - 3/8 - (- 1/2 . 3/2) ] : (- 3/4)
= [ - 3/8 - (- 3/4) ] : (- 3/4)
= [ - 3/8 + 3/4 ] : (- 3/4)
= [ - 3/8 + 6/8 ] : (- 3/4)
= + 3/8 : (- 3/4)
= - 3/8 . 4/3
= - 1/2
Explicação passo-a-passo: