Question

scrieti multimea A={/x€N,2x+7mai mic sau =20} prin enumerarea tuturor elementelor

Answer 1

[tex]2x+7 \leq 20 2x \leq 20-7 2x \leq 13 x \leq \frac{13}{2} x \leq 6,5 x\in(-infinit;6,5] [/tex]

Answer 2

2x+7<sau=20
2x<sau=13

adica A={0;1;2;3;4;5;6}