Question

GENTE TENHAM DÓ DE MIM, SÓ FALTA ESSA ATIVIDADE PRA MIM ENVIAR, ACABAR O MEU ANO LETIVO E PASSAR PARA O 8 ANO
, 28 PONTOS É TUDO O QUE ME RESTA!

Answer 1

Resposta:

a) 4 /5 × 3/2 = 12/10

b) 7/9 × 3/14 = 21 /126

c) 3/4 × 8/3 = 24/12 = 2

d)24/5 × 15/12 = 360/60 = 6

e) 6/2 × 1/7 = 6/14

f) 4/5 × 1/2 = 4/10

g) 10/3 × 9/5 = 90/15

h) 2 × 5/4 = 10/4

i) 100/34 × 17/25 = 1700/850 = 2

j)6/5 ×1/2 = 6/10

k)13/49 × 14/39= 182/1911

l)64/27 × 81/128 = 5184/3456

m) 6/15 ×3/2 = 18/30

n)42/5 ×3/7 = 126/35

o)4/15 × 3/2 = 12/30

p)81/5 × 25/27 = 2 025 / 135

q)14/3 × 3/7 = 42/21 =2

r) 9/4 ×7/25 = 63/100

s)2/3 ×5/4 = 10/12

t)12/24×8/3 = 96/72

Explicação passo-a-passo:

Para fazer a divisão entre frações, basta manter a primeira fração e multiplicá-la pelo inverso da segunda.

Answer 2

Resposta:

a) 1 1/5 = 1,2

b) 1/6 = 0,16

c) 2

d) 6

e) 3/7

f) 2/5 = 0,4

g) 6

h) 8/5 = 1,6

i) 2

j) 3/5 = 0,6

k) 2/ 21

l) 3 / 2 = 1,5

m) 3/ 5 = 0,6

n) 18/ 5 = 3,6

o) 2/ 15

p) 15

q) 2

r) 63/ 100 = 0,63

s) 5/ 6

t)  1/ 6

Explicação passo-a-passo:

a) 4/5 / 2/3

4/5 * 3/2

2/5 * 3

6/5

1 1/5 = 1,2

b) 7/9 / 14/3

7/9 * 3/14

1/3 * 1/2

1/6 = 0,12

c) 3/4 / 3/8

3/4 * 8/3

2

d) 24/5 / 12/15

24/5 * 15/12

2 * 3

6

e) 6/2/7

6 / 2/2 / 2 / 7

3/1/7

3/7]

f) 4/5 / 2

4/5 * 1/2

2/5 = 0,4

g) 10/3 / 5/9

10/3 * 9/5

2 * 3

6

h) 2* 4/5

2/1 * 4/5

2*4/1*5

8/5 = 1,6

i)100/34 / 25/17

4/2

2

j) 6 /5 /2

6 /5 / 2

6/5 *  1/2

6 * 1/5 * 2

3/5 = 0,6

k) 13/ 49 / 39/ 14

13/ 49 * 14/ 39

1/ 7 * 2/ 3

2/ 21

l) 64/ 27 / 128/ 81

64/ 27 * 81/ 128

3/2 = 1,5

m) 6/ 15 / 2/3

6/15 * 3/2

3/5 = 0,6

n) 42/ 5 / 7/ 3

42/ 5 * 3/ 7

6/ 5 * 3

18/ 5 = 3,6

o) 4/ 15/ 2

4/ 15 / 2

4/ 15 * 1/ 2

4 * 1 / 15 * 2

2/ 15

p) 81/ 5 / 27/ 25

81/ 5 * 25/ 27

3 * 5

15

q) 14/ 3 / 7/ 3

14/ 3 * 3/ 7

2

r) 9/ 4 / 25/ 7

9/4 * 7/ 25

63/ 100 = 0,63

s) 2/ 3/ 4/ 5

2/ 3 / 4/5

2/3 * 5/4

2*5/ 3 * 4

5/ 3* 2

5/ 6

t) 12/ 24/ 3

12/ 24 / 3

12/ 24 * 1/ 3

12 * 1/ 24 * 3

4/ 24

1/ 6