đáp số : \(\frac{-5}{6}\)

\(1\frac{13}{15}.0,75-\left(\frac{104}{195}+25\%\right).\frac{24}{47}-3\frac{13}{12}:3\)

= \(\frac{28}{15}.\frac{3}{4}-\left(\frac{104}{195}+\frac{1}{4}\right).\frac{24}{47}-\frac{49}{12}.\frac{1}{3}\)

= \(\frac{4.3.7}{4.3.5}-\frac{47}{60}.\frac{24}{47}-\frac{49}{36}\)

= \(\frac{7}{5}-\frac{2}{5}-\frac{49}{36}\)

= \(1-\frac{49}{36}\)

= \(-\frac{13}{36}\)

Chúc bạn làm bài tốt

\(1\frac{13}{15}.0,75-\left(\frac{104}{195}+25\%\right).\frac{24}{27}-3\frac{13}{12}:3\)

=\(\frac{28}{15}.\frac{3}{4}-\left(\frac{8}{15}+\frac{1}{4}\right).\frac{24}{47}-\frac{49}{12}.\frac{1}{3}\)

=\(\frac{7}{5}-\frac{47}{60}.\frac{24}{47}-\frac{49}{36}\)

=\(\frac{7}{5}-\frac{2}{5}-\frac{49}{36}\)

=\(\frac{-13}{36}\)

mik ko ghi lại đề nhé!

\(A=\left(\frac{18}{15}.\frac{1}{4}.3\right)+\left(-\frac{47}{60}\right).\frac{24}{47}\)

\(A=\frac{8}{5}+\left(-\frac{2}{5}\right)\)

\(A=\frac{6}{5}\)

\(B=\frac{3}{4}.\frac{28}{15}-\left(\frac{8}{15}+\frac{1}{4}\right).\frac{24}{47}-\frac{17}{13}\)

\(B=\frac{7}{5}-\frac{47}{60}.\frac{24}{47}-\frac{17}{13}\)

\(B=\frac{7}{5}-\frac{2}{5}-\frac{17}{13}\)

\(B=1-\frac{17}{13}\)

\(B=-\frac{4}{13}\)

THANKS

a)\(\frac{-212}{351}\)

b)\(\frac{29}{10}\)

c)thiếu đề

Nếu là tính thường thì:

=0-(8/15+1/4).24/47-51/13.1/3

=-(32/60+15/60).24/47-17/13

=-47/60.24/47-17/13

=-2/5-17/13

=-26/65-85/65

=-111/65

=-1/46/65

nếu là tính nhanh thì Mình ko biết sorry!

=28/15*3/4-(104/195+1/4)*24/47-(1+4/13)

=7/5-2/5-1-4/13

=-4/13