Ex 3 punctul b va roooooooooooooooooog

Explicație pas cu pas:
5x+8/2x-1€Z <=>2x-1|5x+8
2x-1|5x+8=>2x-1|10x+16
2x-1|2x-1=>2x-1|10x-5
Le scadem:
2x-1|10x+16-10x+5=>2x-1|21 <=>2x-1€D21 in Z=>
2x-1€{-21,-7,-3,-1,1,3,7,21} =>
2x€{-20,-6,-2,0,2,4,8,22} =>
x€{-10,-3,-1,0,1,2,4,11}