2011 Feb 8 11:43 PM UTC | Math7 [2011]8

Try to solve this equation:

$$2a - a = a^2 - a^2 + a-2$$

Let’s simplify it first:

  1. Remove duplicates:

    $$2a - a = a - 2$$

  2. Reduce like terms by cancelling:

    $$a = a - 2$$

And it cannot be solved xD