12 - x + 2 - 3 = 10
12 - x + 2 = 10 + 3
12 - x + 2 = 7
12 - x = 7 - 2
12 - x = 5
x = 12 - 5
x = 7
12 - x + 2 - 3 = 10
12 - x + 2 = 10 + 3
12 - x + 2 = 13
12 - x = 13 -2
12 - x = 11
x = 12 - 11
x = 1
Vậy x=1
12-x+2-3=10
12-x+2=10+3
12-x+2=13
12-x=13-2
12-x=11
x=12-11
x=1
12-x+2-3=10
x+2 =12-3
x+2 =9
x =9+2
x =11
vì 12-11+2-3=10 k mình nha
tìm x :
12-x+2-3=10
12-x+2=10+3
12-x+2=13
12-x=13-2
12-x=11
x=12-11
x=1
Vậy x=1
12 - x +2 - 3 = 10
12 - x + 2 = 10+ 3
12 - x + 2 = 13
12 - x = 13 -2
12 - x = 11
x = 12 - 11
x = 1