Question

2/35 : (3/5+3/7)

1,2 . 25/6 - (4/3+5/3)

5 5/7 - (3/7+2 3/5) : 4/5

1,4 . 15/49 - (4/5+2/3) : 2 1/5

Answer 1

CÂU 1:\(\frac{2}{35}:\left(\frac{3}{5}+\frac{3}{7}\right)\)

           \(=\frac{2}{35}:\frac{36}{35}\)

           \(=\frac{1}{18}\)

Answer 2

CÂU 2:\(\frac{1}{2}\cdot\frac{25}{6}-\left(\frac{4}{3}+\frac{5}{3}\right)\)

    \(=\frac{25}{12}-3\)

     \(=-\frac{11}{12}\)

Answer 3

CÂU 3:\(5\frac{5}{7}-\left(\frac{3}{7}+2\frac{3}{5}\right):\frac{4}{5}\)

   \(=\frac{40}{7}-\left(\frac{3}{7}+\frac{13}{5}\right):\frac{4}{5}\)

   \(=\frac{40}{7}-\frac{106}{35}:\frac{4}{5}\)

   \(=\frac{40}{7}-\frac{53}{14}\)

   \(=\frac{27}{14}\)