Răspuns:
-3lx=> x={-3,0,3}
l2x-1l<19
-19<2x-1<19
-19+1<2x<19+1
-18<2x<20║:2
-9<x<10
x={-8,-7,-6,-5,-4,-3,-2,-1,0,1,2,3,4,5,6,7,8}
E={-3,0,3}∩{-8,-7,...,7,8}={-3,0,3}
Explicație pas cu pas:
