11 2/5+7 1/2*(285 3/5: 14-1 23/30+13/50): 24 2/5-10 - вопрос №11257122853514123301350242510231007683148 от amazonka101 07.11.2020 02:33

Question

Математика: 11 2/5+7 1/2*(285 3/5: 14-1 23/30+13/50): 24 2/5-10 23/100)

amazonka101 · Answer

1). 285 3/5:14=1428/5:14=1428/5 *1/14=102/5
2). 102/5-1 23/30+13/30=102/5-53/30+13/30=(6*102-1*53+1*13)/30=572/30=286/15
3). 7 1/2*286/15=15/2*286/15=143
4). 143:24 2/5=1434:122/5=143*5/122=715/122
5). 11 2/5+715/122-10 23/100= 57/5+a715/122-1023/100=2440*157-100*7153-122*100=383080-715300-124806/12200=-457026/12200=-228513/6100