Tìm số nguyên x thỏa mãn: -(12 - x) < 5 + x - (13 - x) < x - 5; 2) tìm x: a, (x - 1).(x + 2).(2x - 4) = 0; b, x.(|x| - 3).|x - 3| = 0

1) tìm số nguyên x thỏa mãn:
-(12-x)<5+x-(13-x)<x-5
2) tìm x:
a, (x-1).(x+2).(2x-4)=0
b,x.(|x|-3).|x-3|=0