How do you simplify $5 (3 + 12) + 42 (23 - 4)$ $5(3+12) + 42(23-4)$ using PEMDAS?

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Answer 1 · 2016-07-27T16:19:33

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We must use the PEMDAS method. Let's solve for the parentheses first:

$3 + 12 = 15$ $3+12=15$
$23 - 4 = 19$ $23-4=19$

We now have $5 (15) + 42 (19)$ $5(15)+42(19)$

Next is multiplication:

$5 \cdot 15 = 75$ $5*15=75$
$42 \cdot 19 = 798$ $42*19=798$

$75 + 798$ $75+798$

From here, it's simple addition: $75 + 798 = 873$ $75+798=873$

How do you simplify 5(3+12)+42(23−4)5(3+12) + 42(23-4) using PEMDAS?