a)3/4+4/21×42/4 b) (11/12+3/4):36/24 c) (1/12+17/4):104/12+1/2 d) (13/12-11/18):17/9+2 e) 2-(49/-7/15):14/10 f) (13/12-4/15):49/30+1/3 g) (37/12-3/4):28/5+21/36 h) (11/30-1/8):21/40-1/6. va rooooooooooooog urgent
Soluções para a tarefa
a)3/4+4/21×42/4
3/4 + 2
3/4 + 8/4
11/4
b) (11/12+3/4):36/24
(11/12 + 9/12):36/24
(20/12) / 36/24
20/10 x 24/36
480/360
48/36
4/3
c) (1/12+17/4):104/12+1/2
(1/12 + 51/12) / 104/12 + 1/2
52/12 x 12/104 + 1/2
52/104 + 52/104
104/104
1
d) (13/12-11/18):17/9+2
(78/72-44/72) / 17/9 + 2
34/72 x 9/17 + 2
18/72 + 2
1/4 + 8/4
9/4
e) 2-(49/-7/15):14/10
2 - (-49 x 15/4) / 14/10
2 + 735/4 x 10/14
2 + 7350/56
112/56 + 7350/56
7462/56
3731/28
f) (13/12-4/15):49/30+1/3
(195/180-52/180) / 49/30+1/3
(143/180 x 30/49) + 1/3
4290/8820 + 1/3
429/882 + 1/3
143/294 + 98/294
241/294
g) (37/12-3/4):28/5+21/36
(37/12-9/12) / 28/5+21/36
28/12 x 5 /28 + 21/36
8/12 + 21/36
24/36 + 21 /36
45/36
15/12
h) (11/30-1/8):21/40-1/6
(88/240-30/240):21/40-1/6
58/240 x 40/21 - 1/6
2320/5040 - 1/6
232/504 - 1/6
232/504 - 84/504
148/504
Resposta:
Bom dia!
Explicação passo-a-passo:
Segue 4 exemplares resolvidos:
a)3/4+4/21×42/4
3/4 + 168/84 (simplificar por 21)
3/4 + 8/4
11/4
b) (11/12+3/4):36/24 (mmc = 12)
(11 + 9)/12 : 36/24
20/12 : 36/24 (simplificar)
5/3 : 3/2
10/9
c) (1/12+17/4):104/12+1/2 (MMC = 12)
(1 + 51)/12 : 52/6 + 1/2 =
52/12 : 52/6 + 1/2 (simplificar por 4)
13/3 : 13/3
1 + 1/2
(2+1)/2
3/2
d) (13/12-11/18):17/9+2 (mmc = 36)
(3•13 – 2•11)/36 : 17/9 + 2
(39 – 22)/36 : 17/9 + 2
17/36 : 17/9 + 2
(17•9) : (36•17) + 2
153/612 (simplificar por 9)
17/68 + 2
(17 + 136)/68
153/68