Question

enumerati elementele multimii A={x| x€ Z\ {3}; 4x+2 supra x-3 € Z

Answer 1

A={x| x∈ Z\ {3}; 4x+2 supra x-3 ∈ Z

 => x-3 divide  4x+2

dar x-3 divide  4x-12

x-3 divide 4x+2-(4x-12)

x-3 divide 14

x-3 ∈ D14

x-3={-14,-7,-2,-1,1,2,7,14}

A={-11,-4,1,2,4,5,10,17}