a, Vì -6≤x≤3⇒x=-6,-5,-4,-3,-2,-1,0,1,2,3
b, Vì -3<x<12⇒x= -2,-1,0,1,2,3,4,5,6,7,8,9,10,11
c, Ta có: 2x-4=10 ⇒ 2x=10+4 ⇒2x=14 ⇒ x=14:2=7
2x-4=-10 ⇒2x=(-10)+4 ⇒2x=-6 ⇒x=-6:2=-3
Vậy x= 7 hoặc -3
d, 1/2-3/4:x=1/4
3/4:x=1/2-1/4
3/4:x=1/4
x=3/4:1/4
x=3
Vậy x= 3
Cho ctlhn + 5 sao nhé