Chemistry Examples

$- 704 + - 247 + 47$

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 $1 \cdot - 1 = - 1$

$- 704 - 247 + 47$

Step 2

Subtract $247$ from $- 704$ .

$- 951 + 47$

Step 3

Add $- 951$ and $47$ .

$- 904$