Question

tính : 15/8 + 7/12 - 13/3 x 3/8 

11/5 x 5/22 : 2 + 5/6

Answer 1

\(\frac{15}{8}\)+\(\frac{7}{12}\)-\(\frac{13}{3}\)x\(\frac{3}{8}\)

=\(\frac{45}{24}\)+\(\frac{14}{24}\)-\(\frac{13}{8}\)

=\(\frac{59}{24}\)-\(\frac{39}{24}\)

=\(\frac{20}{24}\)=\(\frac{5}{6}\)

\(\frac{11}{5}\)+\(\frac{5}{22}\):2+\(\frac{5}{6}\)

=\(\frac{11}{5}\)+\(\frac{5}{44}\)+\(\frac{5}{6}\)

=\(\frac{484}{220}\)+\(\frac{25}{220}\)+\(\frac{5}{6}\)

=\(\frac{509}{220}\)+\(\frac{5}{6}\)

=\(\frac{1527}{660}\)+\(\frac{550}{660}\)

=\(\frac{2077}{660}\)