Problem: 21−23=\dfrac{2}{1-\dfrac{2}{3}}=1−322=
Answer Choices:
A. −3-3−3 B. −43-\dfrac{4}{3}−34 C. 23\dfrac{2}{3}32 D. 222 E. 666
Solution:
21−23=213=2×3=6\dfrac{2}{1-\dfrac{2}{3}}=\dfrac{2}{\dfrac{1}{3}}=2 \times 3=61−322=312=2×3=6.
Answer: 6\boxed{6}6.
The problems on this page are the property of the MAA's American Mathematics Competitions