Question

Найдите x:5)2/3x=-3/8
6)40,5:x=4
7)-32/63:x=8/21
8)x:2/7=-1,4

Answer 1

5) 23х=-38

х=-38:23

х=-38*32

х=-916

6) 40,5:х=4

х=40,5:4

х=10,125

7)-3263:х=821

х=-3263:821

х=-3263*218

х=-43=-1 13

8)х:27=-1,4

х=-1,4*27

х=-75*27

х=-25

Answer 2

5) 2/3x=-3/8

16х=-9

х=-9/16

6)40,5:x=4

х=40,5:4

х=10,125

7)-32/63:x=8/21

-32/63*1/х=8/21

63х*8=-32*21

504х=-672

х=-1 21/63
х=-1 1/3

проверка
-32/63:(-84/63)=8/21
(32*63)/(63*84)=8/21
32/84=8/21
8/21=8/21

8)x:2/7=-1,4

х*7/2=-1 4/10

7х/2=-14/10

7х/2=-7/5

35х=-14

х=-14/35

х=-2/5