Question

A family gathered 20 small seashells from the beach bringing the total number of small seashells in their collection to 41.

Answer 1

7 in a half because your non

Answer 2

20x=41 because if you have 20 sea shells + (x) x is the ones that you are missing that add up to 41 and then you would make that all equal 41
20x=41 :)