Question

VA ROG CAT DE REPEDE POSIBIL
DAU COROANA

Answer 1

2(x-5)<x+3
2x-10<x+3
x<13
x∈(∞-,13) ∩ N==>A={0,1,2,3,4,5,6,7,8,9,10,11,12}
(y-3) | 10
y∈{4,5,13}==>B={4,5,13}
A∩B={4,5}