CPM Homework Help : CC2MN Problem 3-47

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3-47.

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

$5(-2)-3$
Answer (a):
$5(-2)+(-3)=-13$

$7.69-(2.5)(4)$
Hint (b):
Circling terms first will be helpful.

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

$(4)(25)-300$
Hint (d):
Remember to use the Order of Operations.

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