Question

Đã trả lời bởi chuyên gia

Answer 1

`a)`

`9204`

` - 62,71`

_______

`9171,29`

`b)`

`3 1/2-3/5`

`7/2 - 3/5`

`= 35/10 - 15/10`

`= 29/10`

`4/9x5/16`

`c)`

`15/34:5`

`= 15/34 xx 5/1`

`= 75/34`

`d)`

`(18xx42+459:9)xx12-46`

`= 756 + 51 xx 12 - 46`

`= 756 + 612 - 46`

`= 1368 - 46`

`= 1322`

_________

sai cho sửa ạ

Answer 2

ta có:

9204-62,71= 9141,29

3 \frac{1}{2} - \frac{3}{5} = \frac{7}{2} - \frac{3}{5} = \frac{35}{10} - \frac{6}{10} = \frac{29}{10} \frac{4}{9} \times \frac{5}{16} = \frac{4 \times 5}{9 \times 16} = \frac{5}{9 \times 4} = \frac{5}{36} \frac{15}{34} : 5 = \frac{15}{34} \times \frac{1}{5} = \frac{3}{34} (18.42 + 459 : 9) . 12 - 46 = (18.42 + 51) . 12 - 46 = 69, 42.12 - 46 = 833, 04 - 46 = 787, 04 - 46 = 741, 04

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Answer 3

ta có:

9204-62,71= 9141,29

3 \frac{1}{2} - \frac{3}{5} = \frac{7}{2} - \frac{3}{5} = \frac{35}{10} - \frac{6}{10} = \frac{29}{10} \frac{4}{9} \times \frac{5}{16} = \frac{4 \times 5}{9 \times 16} = \frac{5}{9 \times 4} = \frac{5}{36} \frac{15}{34} : 5 = \frac{15}{34} \times \frac{1}{5} = \frac{3}{34} (18.42 + 459 : 9) . 12 - 46 = (18.42 + 51) . 12 - 46 = 69, 42.12 - 46 = 833, 04 - 46 = 787, 04 - 46 = 741, 04

Answer 4

16+−25=530+−1230=−730 $\frac{1}{6} + \frac{- 2}{5} = \frac{5}{30} + \frac{- 12}{30} = \frac{- 7}{30}$

512−78=1024−2124=−1124 $\frac{5}{12} - \frac{7}{8} = \frac{10}{24} - \frac{21}{24} = \frac{- 11}{24}$

−425:−3245=−425.−4532=−15.−98=440 $\frac{- 4}{25} : \frac{- 32}{45} = \frac{- 4}{25} . \frac{- 45}{32} = \frac{- 1}{5} . \frac{- 9}{8} = \frac{4}{40}$

−29.711+−29.1011+−29.511=−29(711+1011+511)=−29.2211=−29.2=−49

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Answer 5

16+−25=530+−1230=−730 $\frac{1}{6} + \frac{- 2}{5} = \frac{5}{30} + \frac{- 12}{30} = \frac{- 7}{30}$

512−78=1024−2124=−1124 $\frac{5}{12} - \frac{7}{8} = \frac{10}{24} - \frac{21}{24} = \frac{- 11}{24}$

−425:−3245=−425.−4532=−15.−98=440 $\frac{- 4}{25} : \frac{- 32}{45} = \frac{- 4}{25} . \frac{- 45}{32} = \frac{- 1}{5} . \frac{- 9}{8} = \frac{4}{40}$

−29.711+−29.1011+−29.511=−29(711+1011+511)=−29.2211=−29.2=−49

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