E urgent!!!!!!!!!!!!!!!!

5*|x|-4 </ 11
5*|x| </ 11+4
5*|x| </ 15
|x| </ 15:5
|x|</ 3
-3</ x </ 3
deci A={-3,-2,-1,0,1,2,3}
a) card A=7
b) -3-2-1+0+1+2+3 = 0