Question

x.9-1+9=17

tim x

 

Answer 1

x.9-1+9=19

x.9-1 = 19 - 9

x.9-1 = 10

x . 9 = 10 + 1 

x . 9 = 11

x = 11 : 9

x = 1.2222222222

 

Answer 2

x.9-1=10

x.9=11

x=11/9

Answer 3

Ban xem lai de di

Answer 4

\(x\subset N\)   ko bạn nếu vậy thì ko có \(x\) ; nếu ko thì \(x=\frac{11}{9}\)

Answer 5

x.9-1+9=19

x.9-1 = 19 - 9

x.9-1 = 10

x . 9 = 10 + 1 

x . 9 = 11

x = 11 : 9

x = 11/9