Question

resolva a inequação 5x+2 ≤ 3x - 15 ---------"sendo x um numero natural'

Answer 1

                5x + 2 < 3x - 15
                5x - 3x < - 15 - 2
                       2x < - 17
                         x < - 17/2
                                             x ∉ N
                                                               S = { } vazio
                                                                S = Ф  vazio