How do you evaluate #-7- ( - 16) + ( - 21) - 20#?

1 Answer
smendyka · Jumbotron
Jun 19, 2017

See a solution process below:

Explanation:

First, remove all terms from their parenthesis. Be careful to manage the signs of individual terms correctly:

Recall #- xx - =+# and #+ xx - =+#

#-7 + 16 - 21 - 20 => 16 - 7 - 21 - 20 => 16 - 48 => -32#

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