Question

Determinati multimile:A={x|x€N,x|18si2x+3

Answer 1

18 + 2X×3=60
18+2=20
20×3=60

Answer 2

x|18
B={1,2,3,6,9,18}
2x+3 mai mic sau egal cu 15
2x mai mic sau egal cu 15-3
2x mai mic sau egal cu 12
x mai mic sau egal cu 6=>x€ C={0,1,2,3,4,5,6}
x€ BΠC{1,2,3,6}