đơn giản 2005-205-(1+2) =1800-3=1797 ; 1797-213=1584 duyệt nhé Khánh
X+213=2005-205-1+2
X+213=1801
X=1801-213
X=1588
Vậy X=1588
X + 213 = 2005 - 205 - 1 + 2
X = 2005 - 205 - 1 + 2 - 213
X = 1800 - 1 + 2 - 213
X = 1799 + 2 - 213
X = 1801 - 213
X = 1588
x + 213 = 2005 - 205 - 1 + 2
x + 213 = 1801
x = 1801 - 213
x = 1588
vậy x = 1588
x + 213 = 1801
x = 1801- 213
x = 1588
k mình nha !
x+213=2005-205-1+2
x+213=1801
x=1801-213=1588
X + 213 = 1801
X = 1801 - 213
X = 1588