выполни действия:(3цел1/4+1цел1/6÷1цел5/9)÷2цел2/7+5цел1/9:7цел2/3

=(13/4+7/6:14/9):16/7+46/9:23/3=(13/4+7/6*9/14)*7/16+46/9*3/23=(13/4+1/2*3/2)*7/16+2/3=(13/4+3/4)*7/16+2/3=16/4*7/16+2/3=1/4*7+2/3=29/12=2цел5/12