2 2/3:2+(4/15+2/5):(3 1/3×3/5) Решите плиз надо срочнооо

1) 2 2/3:2+(4/15+2/5):(3 1/3*3/5)=8/3*1/2+(4/15+6/15):(10/3*3/5)=8/6+(10/15:30/15)=4/3+(10/15*15/30)4/3+1/3=5/3=1 2/3.