(4/5 +1/6) * (71/3 -140/9)*45/58-1/2 = 29/30* 73/9*45/58-1\2= 73/12-1/2= 67/12= 5 7/12
1) 4/5+1/6= 24\30 +5/30= 29/30
2) 23 2/3 - 15 5/9= 71/3 - 140/9= 213/9 - 140/9 = 73/9
3)29/30 *73/9 *45/58 =73/12
4) 73/12 - 1/2 = 73/12 - 6/12= 67/12 = 5 7/12
(4/5 +1/6) * (71/3 -140/9)*45/58-1/2 = 29/30* 73/9*45/58-1\2= 73/12-1/2= 67/12= 5 7/12
1) 4/5+1/6= 24\30 +5/30= 29/30
2) 23 2/3 - 15 5/9= 71/3 - 140/9= 213/9 - 140/9 = 73/9
3)29/30 *73/9 *45/58 =73/12
4) 73/12 - 1/2 = 73/12 - 6/12= 67/12 = 5 7/12
1 действие
4/5 + 1/6 = 24/30 + 5/30 = 29/30
2 действие
23 2/3- 15 5/9 = 71/3 - 140\9 = 213/9 - 140/9 = 73/9
3 действие
73/9 * 45/58 = 219/18
4 действие
219/18 - 1/2 = 119/18 - 9/8 = 110/18 = 6 2/18