x - 123 = 123 + 123
x - 123 = 246
x = 246 + 123
x = 369
Vậy x = 369
\(x-123=123+123\)
\(x-123=246\)
\(x=246+123\)
\(x=389\)
cho mình nha!
x-123=123+123
x=123+123+123
x=123 x 3
x=369
x-123=123+123
x-123=246
x=246+123
x=369
Xin lỗi mình nhầm, cho mình sửa lại tí nhé!
\(x-123=123+123\)
\(x-123=246\)
\(x=246+123\)
\(x=369\) cho mình nha! 
X-123=123+123
X-123=246
X=246+123
X=368
Chuc ban may man trong cuoc song!!!
\(x-123=123+123\)
\(x-123=246\)
\(x=369\)
x - 123 = 123 + 123
x - 123 = 246
x = 246 + 123
x = 369
Vậy x = 369
X-123=123+123
X-123=246
X=246+123
X=369
Hoc gioi nha!!!
x - 123 = 123 + 123
x = 246
x = 246 + 123
x = 369
x - 123 = 123 +123
x - 123 = 246
x = 246 + 123
x = 369