Resolve showing each step.9/10÷2/5=
\(\dfrac{9}{10}:\dfrac{2}{5}=\dfrac{9}{10}\cdot\dfrac{5}{2}=\dfrac{9\cdot ot5^1}{ ot10_2\cdot2}=\dfrac{9}{4}=\dfrac{8+1}{4}=2\dfrac{1}{4}\)
