Chemistry Examples

$(- 795 - 393.5 - 285.8) - - 1207$

Step 1

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

$(- 795 - 393.5 - 285.8) + 1207$

Step 2

Subtract $393.5$ from $- 795$ .

$- 1188.5 - 285.8 + 1207$

Step 3

Subtract $285.8$ from $- 1188.5$ .

$- 1474.3 + 1207$

Step 4

Add $- 1474.3$ and $1207$ .

$- 267.3$