8976 + 638 - 234 = 9380
638 + 577 = 1215
253 + 638 = 891
638 + 574 + 496 + 584 = 2,292
985
635 + 3 = 638
638.
79.75
What does 638 mean
638
It seems like the inequality you mentioned is incomplete. If you provide the full inequality (for example, "x + 638 > 0" or "x + 638 < 100"), I can help identify which numbers belong to the solution set. Please provide the complete inequality for a more accurate response.
507-638 = -131
638 x 34 = 21,692