x + 270 + 12 = 68 + 820
x + 282 = 888
x = 888 - 282
x = 606
x + 270 + 12 = 68 + 820
x + 270 + 12 = 888
x + 270 = 888 - 12
x + 270 = 876
x = 876 - 270
x = 606
x + 270 + 12 = 68 + 820
x + 270 + 12 = 888
x + 270 = 888 - 12
x + 270 = 876
x = 876 - 270
x = 606
K mk nha
Mk k bạn rùi
x+270+12=888
x+270 =888-12
x+270 =876
x =876-270
x =606
x+270+12=888
x+270=888-12
x+270=876
x=876-270
x=606
nha
x+270+12=68+820
x+270+12=888
x+282=888
x=888-282
x=606