Ответ:
Пошаговое объяснение:
1) - 15 16/25:4 3/5=-391/25*5/23=-17/5
=-3 2/5
-3 2/5+7 1/10=-3 4/10+7 1/10=3 7/10
3 7/10*2 2/5=37/10*12/5=222/25=
8 22/25
2)2/5-11/15=6/15-11/15=-5/15=-1/3
-1/3*1 2/7=-1/3*9/7=-3/7
7/18-1/2=7/18-9/18=-2/18=-1/9
-1/9:1 1/6=-1/9*6/7=-2/21
-3/7-(-2/21)=-9/21+2/21=-7/21=-1/3
3)2/3*(-1 57/100-1 43/100)=2/3*(-3)=-2
4)-1/5*(3 4/5-3 7/10)=-1/5*(3 8/10-
3 7/10)=-1/5*3 1/10=-1/5*31/10=-31/50
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Ответ:
Пошаговое объяснение:
1) - 15 16/25:4 3/5=-391/25*5/23=-17/5
=-3 2/5
-3 2/5+7 1/10=-3 4/10+7 1/10=3 7/10
3 7/10*2 2/5=37/10*12/5=222/25=
8 22/25
2)2/5-11/15=6/15-11/15=-5/15=-1/3
-1/3*1 2/7=-1/3*9/7=-3/7
7/18-1/2=7/18-9/18=-2/18=-1/9
-1/9:1 1/6=-1/9*6/7=-2/21
-3/7-(-2/21)=-9/21+2/21=-7/21=-1/3
3)2/3*(-1 57/100-1 43/100)=2/3*(-3)=-2
4)-1/5*(3 4/5-3 7/10)=-1/5*(3 8/10-
3 7/10)=-1/5*3 1/10=-1/5*31/10=-31/50