X + 100 = 10 x 100
X + 100 = 1000
X. = 1000 - 100
X. = 900
X + 100 = 10 * 100
X + 100 = 1000
X = 1000 - 100
X = 900
X + 100 = 10 * 1000
X + 100 = 1000
X = 1000 - 100
X = 900
x + 100 = 10 x 100
x + 100 = 1000
x = 1000-100
x = 900
Đáp số : 900 nhé bạn
X + 100 = 10 x 100
X + 100 = 1000
X = 1000 - 100
X = 900
X + 100 = 10 x 100
X + 100 = 1000
X = 1000 - 100
X = 900
x+100=10x100
x+100=1000
x=1000-100
x=900
X + 100 = 10 * 1000
X + 100 = 1000
X = 1000 - 100
X = 900
x + 100 = 10*100
x + 100 = 1000
x = 1000 -100
x = 900
Vậy x = 900