Question

[Ly'ss Týt'ss]

Câu 1:

*LƯU Ý: dấu này"." là nhân.

a) \(57\%+1\frac{2}{15}:\frac{68}{25}-2.282\)

b) \(1\frac{13}{15}.0,75-\left(\frac{8}{15}+0,25\right).\frac{24}{47}\)

c) \(\frac{3}{4}.\frac{16}{9}-\frac{7}{5}:\frac{-21}{26}\)

d) \(5:\left(4\frac{3}{4}-1\frac{25}{28}\right)-1\frac{3}{8}:\left(\frac{3}{8}-\frac{9}{20}\right)\)

CÁC BẠN ƠI GIÚP MÌNH VOIỨ MAI MK NỘP CHO CÔ RÙI HUHU

Answer 1

[Phương Thảo]

a) =\(\frac{57}{100}+\frac{17}{15}.\frac{25}{68}-\frac{1141}{500}\)

= \(\frac{57}{100}+\frac{1}{3}.\frac{5}{4}-\frac{1141}{500}\)

= \(\frac{57}{100}+\frac{5}{12}-\frac{1141}{500}\)

= -\(\frac{1943}{1500}\)

"." là nhân

Answer 2

[Phương Thảo]

b) = \(\frac{28}{15}.\frac{3}{4}-\left(\frac{8}{15}+\frac{1}{4}\right).\frac{21}{47}\)

= \(\frac{7}{5}-\frac{47}{60}.\frac{21}{47}\)

= \(\frac{7}{5}-\frac{7}{20}\)

= \(\frac{28}{20}-\frac{7}{20}\)

= \(\frac{21}{20}\)

K nhé