Question

Rút gọn các phân số:

a) 45/60

b)39/12

c)81/90

d)360/720

e)24/20

g)66/65

...)66/55

Answer 1

\(a,\frac{45}{60}=\frac{45:15}{60:15}=\frac{3}{4}\)

\(b,\frac{39}{12}=\frac{39:3}{12:3}=\frac{13}{4}\)

\(c,\frac{81}{90}=\frac{81:9}{90:9}=\frac{9}{10}\)

\(d,\frac{360}{720}=\frac{360:360}{720:360}=\frac{1}{2}\)

\(e,\frac{24}{20}=\frac{24:4}{20:4}=\frac{6}{5}\)

\(g,\frac{66}{65}=\frac{66}{65}\)

\(...,\frac{66}{55}=\frac{66:11}{55:11}=\frac{6}{5}\)

Answer 2

a) 45/60 = 3/4

b)  39/12 = 13/4

c) 81/90 = 9/10

d) 360/720 = 1/2

e) 24/20 = 6/5

g) 66/65 = 66/65

h) 66/55 = 6/5

mik nha !~