Question

Dacă (2x+3)|6 și xez, atunci xe este???

Answer 1

2x+3|6⇒$2x+3$∈{-6,-3,-2,-1,1,2,3,6}
2x∈{-9,-6,-5,-4,-2,-1,0,3}
x∈{-3,-2,-1,0}