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Liliya0529
@Liliya0529
December 2021
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Помогите пж 8 номер. Заранее спасибо
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juliasharomanip5e6w8
Має бути правильно)))))))))
2 votes
Thanks 1
ирэн79
1)0,3(1,2х-0,5у)-1,5(0,4х+у)=0,36х- 0,15у-0,6х-1,5у=-0,24х-1,65у
2)-2,4(2,5а-1,5b)+0,5(1,8b+5,6а)=
-6а+3,6b+0,9b+2,8a=-3,2a+4,5b
3)-1,8(3,5m-5)-6,5(0,8-0,4m)=-6,3m+
9-5,2+2,6m=-3,7m+3,8
4)4/9(1 1/2c-3/8)-(1 5/6-1 1/3c)= 2/3c-1/6-1 5/6+1 1/3c=2c-2
5)1,2(5/6k+0,4n)-1,8(5/9k-0,3n)= k+0,48n-k+0,54n=1,02n
6)(1/6a+6,5)-(2 7/9a+3 1/3)= 1/6a+6,5-2 7/9a-3 1/3=-2 11/18a+3 1/6
7)3/7(0,56x-4,9y)-6/13(0,52x-3,9y)=
0,24x-2,1y-0,24x+1,8y=-0,3y
8)6(1/4k-5/6)-15(0,6-2 1/3k)=1,5k-5-
9+35k=36,5k-14
2 votes
Thanks 2
Liliya0529
Спасибо)))
ирэн79
Не за что))
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Answers & Comments
2)-2,4(2,5а-1,5b)+0,5(1,8b+5,6а)=
-6а+3,6b+0,9b+2,8a=-3,2a+4,5b
3)-1,8(3,5m-5)-6,5(0,8-0,4m)=-6,3m+
9-5,2+2,6m=-3,7m+3,8
4)4/9(1 1/2c-3/8)-(1 5/6-1 1/3c)= 2/3c-1/6-1 5/6+1 1/3c=2c-2
5)1,2(5/6k+0,4n)-1,8(5/9k-0,3n)= k+0,48n-k+0,54n=1,02n
6)(1/6a+6,5)-(2 7/9a+3 1/3)= 1/6a+6,5-2 7/9a-3 1/3=-2 11/18a+3 1/6
7)3/7(0,56x-4,9y)-6/13(0,52x-3,9y)=
0,24x-2,1y-0,24x+1,8y=-0,3y
8)6(1/4k-5/6)-15(0,6-2 1/3k)=1,5k-5-
9+35k=36,5k-14