a) 2/5 + 1/6 = d) 3/8 + 2/5 - 2/9 = g) 15/32 - 17/24 = a ) 2/5 + 1/6 = d ) 3/8 + 2/5 - 2/9 = g ) 15/32 - 17/24 =
Respostas
Resposta:
Explicação passo a passo:
.
. a) 2/5 + 1/6 = (m.m.c. = 5 . 6 = 30)
. 12/30 + 5/30 =
. (12 + 5)/30 =
. 17/30
.
. d) 3/8 + 2/5 - 2/9 = (m.m.c. = 8.5.9 = 360)
. 135/360 + 144/360 - 80/360 =
. (135 + 144 - 80)/360 =
. (279 - 80)/360 =
. 199/360
.
. g) 15/32 - 17/24 = (m.m.c. = 96)
. 45/96 - 68/96 =
. (45 - 68)/96 =
. - 23/96
.
(Espero ter colaborado)
a.
2/5 + 1/6
mmc = 5 . 6 = 30
12/30 + 5/30
(12 + 5)/30
17/30
d.
3/8 + 2/5 - 2/9
mmc = 5 . 8 . 9 = 360
135/360 + 144/360 - 80/360
(135 + 144 - 80)/360
(279 - 80)/360
199/360
g.
15/32 - 17/24
mmc = 24 . 32 = 96
45/96 - 68/96
(45 - 68)/96
- 23/96
att. yrz