Question

You have a deck of t trading cards. You give 17 cards to a friend and have 3 left for yourself. How many cards were in the original deck? Write a simpler, equivalent equation to solve t-17 = 3 and find the number of cards in the deck.​

Answer 1

t-17=3

20-17=3

There are 20 cards in the original deck.

Explanation:

17+3 is 20 so 20-17=3