Пошаговое объяснение:
-1/2:10+8 7/10:5+(-4 1/5)×(-0,4)
1) - 1/2:10= - 0,5:10= - 0,05
2) 8 7/10:5=8,7:5=1,74
3) (-4 1/5)×(-0,4)=(-4,2)×(-0,4)=1,68
4) - 0,05+1,74+1,68=3,37
-21/22×(10-14 5/7)+48:(8 10/17-10)
1) 10-14 5/7=10-103/7=(70-103)/7=
= - 33/7
2) - 21/22×(-33/7)=9/2
3) 8 10/17-10=146/17-10=(146-170)/17=
= - 24/17
4) 48:(-24/17)= - 48×17/24= - 34
5) 9/2+(-34)=4,5-34= - 29,5
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Answers & Comments
Пошаговое объяснение:
-1/2:10+8 7/10:5+(-4 1/5)×(-0,4)
1) - 1/2:10= - 0,5:10= - 0,05
2) 8 7/10:5=8,7:5=1,74
3) (-4 1/5)×(-0,4)=(-4,2)×(-0,4)=1,68
4) - 0,05+1,74+1,68=3,37
-21/22×(10-14 5/7)+48:(8 10/17-10)
1) 10-14 5/7=10-103/7=(70-103)/7=
= - 33/7
2) - 21/22×(-33/7)=9/2
3) 8 10/17-10=146/17-10=(146-170)/17=
= - 24/17
4) 48:(-24/17)= - 48×17/24= - 34
5) 9/2+(-34)=4,5-34= - 29,5