In dividing or subracting three real numbers, does the order matter

You eat 8 strawberries and your friend eats 12 strawberries from a bowl. there are 20 strawberries left. which equation and solution give the original number of strawberries?

Write each of the following numerals in base 10. for base twelve, t and e represent the face values ten and eleven, respectively. 114 base 5 89t base 12

Another type of subtraction equation is 16-b=7. explain how you would sole this equation then solve it.