Question

Alguém me ajuda por favorrrrr

Answer 1

3)(não simplifiquei pois, a questão não pedia)

a) 1/2 * 8/8 = 8/16

b) 4/7 * 2/5 = 8/35

c) 5/3 * 2/7 = 10/21

d) 3/7 * 1/5 = 3/35

e) 7/8 : 4/7 = 49/32

f) 18/4 : 6/5 = 90/24

g) 25/4 : 2/5 = 125/8

h) 1/2 : 3/4 = 4/6

I) -5/8 + 3/52 = -5+12/8 = 7/8

J) 8/6 - 1/3 = 8-2/6 = 6/6

K) 5/6 + 2/5 = 25+12/30 = 37/30

L) 7/4 + 3/7 = 49 + 12/28 = 61/28

M) 1/9 + 4/5 = 5+36/45 = 41/45

N) 1/8 - 5/2 = 1-20/8 = -19/8

O) 8/7 - 1/3 = 24-7/21 = 17/21

4)

a) 6/8 = 3/4

b) 12/15 = 4/5

c) 10/16 = 5/8

d) 7/35 = 1/5

e) 48/20 = 12/5

f) 192/240 = 4/5

g) 234/390 = 3/5

h) 175/25 = 7/1

5) (Anexo)

6)

a) 27 : 9 , 45 : 9 = 3/5

b) 15 : 15, 60 : 15 = 1/4

c) 14 : 2 , 28 : 2 = 7/14

d) 30 : 15, 45 : 15 = 2/3

e) 24 : 12, 144 : 12 = 2/12 ---> 2 : 2, 12 : 2 = 1/6