Предмет: Математика, автор: lenok1307

13-(6,6- 2 8/15) * 3
50-(3 3/4 + 6,5):0,25

Ответы

Автор ответа: кристина9898989898

2

13-(66/10-38/15)*3=13-(198/30-76/30)*3=13-(122/30)*3=13-(61/15)*3=13-12.2=0.8
50-(15/4+6.5)/0.25=50-(3.75+6.5)/0.25=50-10.25/0.25=50-41=9

lenok1307: как получилось 12,2 ???

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