Question

Determinati elementele multimii A= {x € N | 11 | (2x + 45) si x <_ 40}

Answer 1

x={5,16,27,33}
11 I (2x5+45) => 11 I (10+45) => 11 I 55
11 I (2x16+45) => 11 I (32+45) => 11 I 77
11 I (2x27+45) => 11 I (54+45) => 11 I 99
11 I (2x33+45) => 11 I (66+45) => 11 I 111
 A={55,77,99,111}