CPM Homework Help : MC1 Problem 3-119

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3-119.

Rewrite each of the following expressions using only addition. Then simplify the expression.

$5 ( - 2 ) - 3$
Answer (a):
$5\left(−2\right)+\left(−3\right) = −13$

$7 - ( - 2 ) ( - 5 )$
Hint (b):
Circling terms will also be helpful in this problem.
$7 - \enclose{circle}{ \ \ \ ( - 2 ) ( - 5 ) \ \ \ }$

$- 7 + - 3 - ( - 5 )$
Answer (c):
The equivalent addition expression is $−7+\left(−3\right)+5$ . Remember to simplify.

$( - 4 ) ( - 25 ) - 300$
Hint (d):
Circling terms first will be helpful. This has been done for you.
$\enclose{circle}{\ \ \ ( - 4 ) ( - 25 )\ \ \ } - 300$

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