x + 123 = 234 + 345
x + 123 = 579
x = 579 - 123
x = 456
x + 123 = 234 +345
x + 123 = 579
x = 579 - 123
x = 456
x + 123 = 234 + 345
x + 123 = 579
x = 579 - 123
x = 456
x+123 = 234 + 345
x+123 = 579
x = 579-123
x = 456
x+123=234+345
x+123=579
x=579-123
x=456
vậy x=456
x + 123 = 234 + 345
x + 123 = 579
x= 579 - 123
x= 456
x+123=234+345
x+123=579
x=579-123
x=456
x + 123 = 234 + 345
x + 123 = 579
x = 579 - 123
x = 456
K mk nha
Thank you very much !!!!!!
