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nicole8991
The answer is 30 because when you add 18 and 12 you get 30. The word problem could be that someone had 18 dollars and then found another 12 dollars.

Answer.    If Joe had 18 gum balls and then got 12 as a christmas present but did,not know that he got more gumballs but his brother who gave the gum balls to him told him that he now had 30 gum balls how many gum balls did he have in total

Step-by-step explanation:

30