\(1\frac{13}{15}.\left(0,5\right)^2.3+\left(\frac{8}{15}-1\frac{19}{60}\right):1\frac{23}{24}\)

\(=1\frac{13}{15}.0,25.3+\left(-\frac{47}{60}\right):1\frac{23}{24}\)

\(=1\frac{13}{14}.0,75+\left(-\frac{2}{5}\right)\)

\(=1,4-0,4\)

\(=1\)

\(1\frac{13}{15}.\left(0,5\right)^2.3+\left(\frac{8}{15}-1\frac{19}{60}\right);1\frac{23}{24}=\frac{7}{5}+\left(-\frac{2}{5}\right)=1\)

bằng 1

kết quả : 1

tick cho mk nhé

=28/15 x 0,25 x 3 + (8/15 - 79/60) : 47/24

= 28/15 x 0,25 x 3 + (-47/60) : 47/24

Bạn tự tính kết quả theo lần lượt nhé 

a/ (-3,2).\(\frac{-15}{64}\)+(0,8-2\(\frac{4}{5}\)):1\(\frac{23}{24}\)

=(\(\frac{-16}{5}\)).\(\frac{-15}{64}\)+(\(\frac{4}{5}\)-\(\frac{14}{5}\)):\(\frac{47}{24}\)

=(\(\frac{-16}{5}\)).\(\frac{-15}{64}\)+(-2):\(\frac{47}{24}\)

= \(\frac{3}{4}\)+\(\frac{-48}{47}\)

=\(\frac{-51}{188}\)

b/ 1\(\frac{13}{15}\).3.(0,5)\(^2\).3+(\(\frac{8}{15}\)-1\(\frac{19}{60}\)):1\(\frac{23}{24}\)

= \(\frac{28}{15}\).3.\(\frac{1}{4}\).3+(\(\frac{8}{15}\)-\(\frac{79}{60}\)):\(\frac{47}{24}\)

= \(\frac{28}{15}\).3.\(\frac{1}{4}\).3+(\(\frac{-47}{60}\)):\(\frac{47}{24}\)

= \(\frac{28}{5}\).\(\frac{1}{4}\).3+(\(\frac{-47}{60}\)):\(\frac{47}{24}\)

= \(\frac{7}{5}\).3+(\(\frac{-47}{60}\)):\(\frac{47}{24}\)

= \(\frac{21}{5}\)+(\(\frac{-47}{60}\)):\(\frac{47}{24}\)

= \(\frac{21}{5}\)+(\(\frac{-2}{5}\))

= \(\frac{19}{5}\)

mk làm hơi dài dòng chút 

CHÚC BẠN HỌC TỐT

\(1\frac{13}{15}:\left(0,5\right)^2.3+\left(\frac{8}{15}-1\frac{19}{60}\right):1\frac{23}{24}=\frac{28}{15}.12+\left(\frac{8}{15}-\frac{79}{60}\right).\frac{24}{47}\)

                                                                         \(=\frac{112}{5}+\left(-\frac{47}{60}.\frac{24}{47}\right)\)

                                                                         \(=\frac{112}{5}-\frac{2}{5}\)

                                                                        \(=\frac{100}{5}=20\)

Study well ! >_<

\(1\frac{13}{15}:0,5^2.3+\left(\frac{8}{15}-1\frac{19}{60}\right):1\frac{23}{24}\)

\(=\frac{28}{15}:0,25.3+\left(\frac{8}{15}-\frac{79}{60}\right):\frac{47}{24}\)

\(=\frac{112}{15}.3+\left(\frac{32}{60}-\frac{79}{60}\right):\frac{47}{24}\)

\(=\frac{112}{5}+\frac{-47}{60}:\frac{47}{24}\)

\(=\frac{112}{5}+\frac{-47}{60}.\frac{24}{47}\)

\(=\frac{112}{5}+\frac{-1}{5}.\frac{2}{1}\)

\(=\frac{112}{5}+\frac{-2}{5}\)

\(=\frac{110}{5}\)

\(=\frac{22}{1}=22\)

\(1\frac{13}{15}\cdot\left(0,5\right)^2\cdot3-\left(\frac{8}{15}+1\frac{19}{60}\right):1\frac{19}{60}\)

\(=\frac{28}{15}\cdot\frac{1}{4}\cdot\frac{3}{1}-\frac{37}{20}\cdot\frac{60}{79}\)

\(=\frac{7}{5}-\frac{111}{79}\)

\(=\frac{-2}{395}\)

=28/15.1/4.3-8/15-79/60.60/79

=7.4/15.1/4.3-8/15-1

=7/15.3-8/15-1

=21/15-8/15-1

=13/15-1

=-2/15

ko hc mà đòi có thi thì đúp