Question

tính

\(\frac{2}{7}:\frac{13}{24}+\frac{2}{7}:\frac{5}{24}\)

các bạn đừng nhóm 13/24 và 5/24 lại nhé.

Answer 1

\(\frac{2}{7}:\frac{13}{24}+\frac{2}{7}:\frac{5}{24}\)

\(=\frac{2}{7}x\frac{24}{13}+\frac{2}{7}x\frac{14}{5}=\frac{2}{13}x\frac{24}{7}+\frac{2}{5}x\frac{24}{7}\)

\(=\frac{24}{7}x\left(\frac{2}{13}+\frac{2}{5}\right)=\frac{24}{7}x\frac{36}{65}=\frac{864}{455}\)

Answer 2

=48/91+48/35

=864/455

   study well

  k nha

  mk xin cảm ơn mọi người

Answer 3

tính

27 :1324 +27 :524 

\(=\frac{48}{91}+\frac{48}{35}\)

\(=\frac{864}{455}\)

Study well 

Answer 4

864/455

study well

Answer 5

=2/7:(13/24+5/24)

=2/7:3/4

=2/7.4/3

=14/3