Найдите значение выражения надо (4/5 +1/6) * ( 23 2/3- 15 5/9) *45/58 - 1/2

(4/5+1/6)*(23 2/3-15 5/9)*45/58-1/2=(24/30+5/30)*(71/3-140/9)*45/58-1/2= =29/30*(213/9-140/9)*45/58-1/2=29/30*73/9*45/58-1/2=(29*73*45)/(30*9*58)-1/2= =(29*73*5)/(30*58)-1/2=(29*73)/(6*58)-1/2=73/(6*2)-1/2=73/12-1/2=73/12-6/12=67/12=5 7/12