( 2/3×2 1/3)+(2/4÷2 3/4)=

(2/3×7/3)+(2/4÷11/4)=14/9+(2/4×4/11)=14/9+2/11= 154/99+18/99=33/99=11/33

(2/3 × 6/3)+(2/4 ÷ 8/4)
(2/3 × 2)+(2/4 × 4/8)
(2/3 × 2)+(1 × 1/4)
4/3 + 1/4=19/12=1 7/12

maaf klo salah:)