(4/5 + 1/6) (232/3 - 155/9) 45/58 - 1/2
= (24/30 + 5/30) (46/3 - 75/9) 45/58 - 1/2
= 29/30 (138/3 - 125/3) 45/58 - 1/2
= 29/30 (13/3) 45/58 - 1/2
= 29/30 13/3 45/58 - 1/2
= 37785/6960 - 1/2
= (37785 - 3480)/6960
= 34305/6960
= 245/50
= 49/10
Ответ: 49/10
(4/5 + 1/6) (232/3 - 155/9) 45/58 - 1/2
= (24/30 + 5/30) (46/3 - 75/9) 45/58 - 1/2
= 29/30 (138/3 - 125/3) 45/58 - 1/2
= 29/30 (13/3) 45/58 - 1/2
= 29/30 13/3 45/58 - 1/2
= 37785/6960 - 1/2
= (37785 - 3480)/6960
= 34305/6960
= 245/50
= 49/10
Ответ: 49/10