(13 93/98-15 17/49) -(13 93/98-2 5/7) = ? - вопрос №8651287139398151749139398257 от baron2032012 08.02.2020 23:23

Question

Математика: (13 93/98-15 17/49) -(13 93/98-2 5/7) = ?

baron2032012 · Answer

1) 13 93/98 - 15 17/49Общий знаменатель 9813 93/98 - 15 17*2/98 =  (13-15)+ (93/98 - 34/98)=-2+ 59/98==-196/98+59/98=-137/98=-1 39/982) 13 93/98-2 5/7= (13-2)+(93/98- 5*14/98)= 11+ 23/98=11 23/983)-1 39/98 + 11 23/98==-1 39/98 + 10 121/98 = 9 82/98...