How do you evaluate $[(2 + 4 * 3) - 8] + 81$ ?

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Answer 1 · 2015-06-05T22:47:01

To evaluate $[(2+4*3)-8]+81$ use PEMDAS

Parentheses
Exponents
Multiplication
Division
Addition
Subtraction

First evaluate $(2+4*3)$
Multiplication takes precedence over addition so

$(2+4*3) = (2+12) = 14$

Next evaluate $[14-8]$

$[14-8] = 6$

Then evaluate $6+81$

$6+81 = 87$

So, in place, this sequence looks like:

$[(2+4*3)-8]+81$

$=[(2+12)-8]+81$

$=[14-8]+81$

$=6+81$

$=87$

How do you evaluate [(2 + 4 * 3) - 8] + 81[(2 + 4 * 3) - 8] + 81?