Question

You will now create two number puzzles and/or tricks that can be justified using algebra.
Both of your puzzles/tricks must require the use of several steps.
1. The first one must be justified using one or more algebraic expressions. You must create the trick/puzzle and then justify why it works using algebra, showing all working.
2. The second one must involve an equation that can be solved to find the original value. You must create the trick/puzzle and then justify why it works showing all working.

Answer 1

Answer:

wait for 5 min.

Step-by-step explanation:

just 5 minutes