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yanahatinskaya
@yanahatinskaya
August 2022
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Дам 25 баллов Умоляю вас,)
1 пример
-(2,5m-3 3/4n-1,2m)
Если m= 3 1/3 n= -1 1/5
2пример
2 2/5:1,6-(5,15:0,25-0,06)
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zhenyaM2002
Verified answer
-(2,5m - 3 3/4 * n - 1.2m) = - (1.3m - 3 3/4 * n) = -1.3m + 3 3/4 * n
m = 3 1/3 ; n = - 1 1/5
- 1.3 * 3 1/3 + 3 3/4 * (- 1 1/5) =
= - 13/10 * 10/3 + 15/4 * (-6/5) =
= - 13/3 + ( - 9/2) = - (26/6 + 27/6) =
= - 53/6 = - 8 5/6
2 2/5 : 1,6 - (5,15 : 0,25 - 0,06) =
= 2,4 : 1,6 - (20,60 - 0,06 ) =
= 1,5 - 20,54 = - (20,54 - 1,50) =
= - 19,04
по действиям:
1) 5,15 : 0,25 = 515/25 = 20,6
2) 20,6 - 0,06 = 20,60 - 0,06 = 20,54
3) 2 2/5 : 1,6 = 2 4/10 : 1,6 = 2,4 : 1,6 = 1,5
4) 1,5 - 20,54 = - (20,54 - 1,50) = -19,04
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Answers & Comments
Verified answer
-(2,5m - 3 3/4 * n - 1.2m) = - (1.3m - 3 3/4 * n) = -1.3m + 3 3/4 * nm = 3 1/3 ; n = - 1 1/5
- 1.3 * 3 1/3 + 3 3/4 * (- 1 1/5) =
= - 13/10 * 10/3 + 15/4 * (-6/5) =
= - 13/3 + ( - 9/2) = - (26/6 + 27/6) =
= - 53/6 = - 8 5/6
2 2/5 : 1,6 - (5,15 : 0,25 - 0,06) =
= 2,4 : 1,6 - (20,60 - 0,06 ) =
= 1,5 - 20,54 = - (20,54 - 1,50) =
= - 19,04
по действиям:
1) 5,15 : 0,25 = 515/25 = 20,6
2) 20,6 - 0,06 = 20,60 - 0,06 = 20,54
3) 2 2/5 : 1,6 = 2 4/10 : 1,6 = 2,4 : 1,6 = 1,5
4) 1,5 - 20,54 = - (20,54 - 1,50) = -19,04