Question

[ánhi]

tim x biet

x + 1 = x + 1 = 500

minh cho cac ban nick nay:

ten nick: caiquan

mat khau: cai quan

Answer 1

[Song phai noi phet]

x + 1 = x + 1 = 500

= x + 1 = 500

x = 500 - 1

x = 499

vay x = 499

 dap so :  499

Answer 2

[Châu Lê Minh Thư]

x + 1 = x + 1 = 500

= x + 1 = 500

x = 500 - 1

x = 499