Question

( 1 ) Simplifique as frações tornando-as irredutíveis.

a)8/20=? g)30/110=?

b)21/28=? h)120/90

c)20/50=? i)42/84=?

d)24/60=? j)54/90=?

e)30/45=? k)14/21=?

f)25/30=? l)210/490=?

me ajudem ;--; :w:

Answer 1

a) 8/20 (*2/2) = 4/10 (*2/2) = 2/5

b) 21/28 (*7/7) = 3/4

c) 20/50 (*10/10) = 2/5

d) 24/60 (*12/12) = 2/5

e) 30/45 (*15/15) = 2/3

f) 25/30 (*5/5) = 5/6

g) 30/110 (*10/10) = 3/11

h) 120/90 (*30/30) = 4/3

i) 42/84 (*42/42) = 1/2

j) 54/90 (*2/2) = 27/45 (*3/3) = 9/15 (*3/3) = 3/5

k) 14/21 (*7/7) = 2/3

l) 210/490 (*10/10) = 21/49 (*7/7) = 3/7

Answer 2

Olá

a) 8/20 ÷ 4 = 2/5

b) 21/28 ÷ 7 = 3/4

c) 20/50 ÷ 10 = 2/5

d) 24/60 ÷ 12 = 2/5

e) 30/45 ÷ 15 = 2/3

f) 25/30 ÷ 5 = 5/6

g) 30/110 ÷ 10 = 3/11

h) 120/90 ÷ 30 = 4/3

i) 42/84 ÷ 42 = 1/2

j) 54/90 ÷ 18 = 3/5

k) 14/21 ÷ 7 = 2/3

l) 210/490 ÷ 70 = 3/7

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