Question

tính rồi rút gọn

3/4 × 2/5=

9/19×38/3=

5×17/15

14:7/10

14/5:6/13

Answer 1

= 6/20 = 3/10

= 342/57 = 6

= 85/15 = 17/3

= 14 x 10/7 = 140/7 = 20

= 14/5 x 13/6 = 182/30 = 91/15

Answer 2

= 6/20 = 3/10

= 342/57 = 6

= 85/15 = 17/3

= 14 x 10/7 = 140/7 = 20

= 14/5 x 13/6 = 182/30 = 91/15
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