CPM Homework Help : MC2 Problem 5-112

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5-112.

Simplify each numerical expression.

$\frac { 1 } { 2 } ( 5 + 13 ) - 4 \cdot 5$
Hint (a):
Follow the order of operations.
More Help (a):
First simplify the terms in parentheses, then exponents, the terms that are multiplied or divided, and finally the terms that are added or subtracted.
Answer (a):
$−11$

$(5 + 11)-(24-15) · (3)$
Hint (b):
See part (a).

$6^2 + 3 · 7-9 ÷ 3$
Hint (c):
See part (a).
Answer (c):
$54$

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