Question

Tính nhanh

A 21 phần 11 nhân 7 phần 13 nhân 68 phần 63

B 26 phần 25 nhân 7 phần 13 nhân 5 phần 14

Answer 1

A, 476/429

B, 1/5

Answer 2

2250 kg rau

Answer 3

A. \(\frac{476}{429}\)

B. \(\frac{1}{5}\)

Answer 4

2250KG

Answer 5

2250

hok tốt nhé

Answer 6

A)   \(\frac{21}{11}\)' \(\frac{7}{13}\)'\(\frac{68}{63}\)                                                                         B)   \(\frac{26}{25}.\frac{7}{13}.\frac{5}{14}\)

=\(\frac{3}{11}\)'\(\frac{1}{3}\)' \(\frac{68}{63}\)                                                                                =  \(\frac{26}{25}.\frac{1}{13}.\frac{5}{2}\)

=\(\frac{3}{33}\)' \(\frac{68}{63}\)                                                                                         =  \(\frac{26}{25}\frac{5}{26}\)

=\(\frac{1}{33}\)' \(\frac{68}{21}\)                                                                                        = \(\frac{1}{5}.\frac{1}{1}\)

=\(\frac{68}{396}\)                                                                                                  = \(\frac{1}{5}\)

=\(\frac{17}{74}\)

                                                  NHỚ K CHO MIK NHA ^^

Answer 7

2250 kg rau

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