Basic Math Examples

2 + - 4

$2 + - 4$

Step 1

Replace all occurrences of

+

$+$

-

$-$ with a single

-

$-$ . A plus sign followed by a minus sign has the same mathematical meaning as a single minus sign because

1 \cdot - 1 = - 1

$1 \cdot - 1 = - 1$

2 - 4

$2 - 4$

Step 2

Subtract

4

$4$ from

2

$2$ .

- 2

$- 2$