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aizhan79
@aizhan79
October 2021
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вычислите 1)25,2÷3целых1/2+(6-4целых1/4)×0,6 2)(7-1целых5/12)÷6,7+(5,75-3целых1/6)÷15,5
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missisanastasi2
Решение
1) 25,2 : 3 (1\2) + [6 - 4 (1\3)] *0,6 =
= 25,2 / (7/2) + [1(2/3)]*0,6 = 7,2 + 1 = 8,2
2) [7 - 1(5\12)] / 6,7 + [5,75 - 3 (1\6)] / 15,5 = [5(7/12)] / 6,7 +
+ [2(7/12)] / 15,5 = (67/12)*(10/67) + (31/12)*(10/155) = 5/6 + 5/30 = 1
6 votes
Thanks 9
aizhan79
спс
missisanastasi2
пожалуйста, учись хорошо
ЛЮБЛЮ555
А что обозначает знак"/"?
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Answers & Comments
1) 25,2 : 3 (1\2) + [6 - 4 (1\3)] *0,6 =
= 25,2 / (7/2) + [1(2/3)]*0,6 = 7,2 + 1 = 8,2
2) [7 - 1(5\12)] / 6,7 + [5,75 - 3 (1\6)] / 15,5 = [5(7/12)] / 6,7 +
+ [2(7/12)] / 15,5 = (67/12)*(10/67) + (31/12)*(10/155) = 5/6 + 5/30 = 1