Question

rút gọn p/s 

a)120/300

b)360/640

c)2310/3850

d)1313 / 4747

Answer 1

a, 120/300= 2/5

b, 360/640=9/16

c, 2310/3850=321/385

d,1313/4747=13/47

Answer 2

a) \(\frac{120}{300}=\frac{12}{30}=\frac{2}{5}\)

b) \(\frac{360}{640}=\frac{36}{64}=\frac{6}{9}\)

c) \(\frac{2310}{3850}=\frac{231}{385}=\frac{3}{5}\)

d) \(\frac{1313}{4747}=\frac{13}{47}\)

Answer 3

a)\(\frac{120}{300}=\frac{120:60}{300:60}=\frac{2}{5}\)

b)\(\frac{360}{640}=\frac{360:40}{640:40}=\frac{9}{16}\)

c)\(\frac{2310}{3850}=\frac{2310:210}{3850:210}=\frac{11}{18}\)

d)\(\frac{1313}{4747}=\frac{13.101}{47.101}=\frac{13}{47}\)