Question

Tính:

\(\dfrac{5}{3}+\dfrac{4}{3}\)               \(\dfrac{10}{9}-\dfrac{3}{5}\)                 \(\dfrac{9}{8}\times\dfrac{4}{7}\)               \(12:\dfrac{6}{5}\)

Answer 1

\(\dfrac{5}{3}+\dfrac{4}{3}=\dfrac{5+4}{3}=\dfrac{9}{3}=3\)
\(\dfrac{10}{9}-\dfrac{3}{5}=\dfrac{50}{45}-\dfrac{12}{45}=\dfrac{50-12}{45}=\dfrac{38}{45}\)
\(\dfrac{9}{8}\times\dfrac{4}{7}=\dfrac{9\times4}{8\times7}=\dfrac{36}{56}=\dfrac{9}{14}\)
\(12:\dfrac{6}{5}=12\times\dfrac{5}{6}=\dfrac{12\times5}{6}=\dfrac{60}{6}=10\)