Question

x + 909 - 1234= 1899 

Answer 1

=> x + 909 = 1899+1234

=> x + 909 = 3133

=> x = 3133 - 909

=> x =2224

vậy x =2224

Answer 2

x+909-1234=1899

x+909       =1899+1234

x+909       =3133

x              =3133-909

x              =2324

  mk nha

Answer 3

x+909-1234=1899

=>x+909=1899+1234

=>x+909=3133

=>x =3133-909

=>x =2224