Question

3, 2/3-5/9x3/4 ; 1/2+1/3:1/6 ; 2/5 + 1/4 :3/8 ; 7/9x3/14:5/8

Answer 1

3,\(\dfrac{2}{3}-\dfrac{5}{9}\times\dfrac{3}{4}=\dfrac{2}{3}-\dfrac{5}{12}=\dfrac{8-5}{12}=\dfrac{3}{12}=\dfrac{1}{4}\)
   \(\dfrac{1}{2}+\dfrac{1}{3}:\dfrac{1}{6}=\dfrac{1}{2}+\dfrac{1\times6}{3\times1}=\dfrac{1}{2}+2=\dfrac{1+4}{2}=\dfrac{5}{2}\)