Algebra Examples

$0 - - 10$

Step 1

Replace all occurrences of $-$ $-$ with a single $+$ . Two consecutive minus signs have the same mathematical meaning as a single plus sign because $- 1 \cdot - 1 = 1$

$0 + 10$

Step 2

The sum of $0$ and $10$ is $10$ because $0$ is the additive identity.

$10$