How do you simplify $-12-4+(8xx4)$ ?

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Answer 1 · 2018-07-26T00:33:48

16

We'll use the Order of Operations, sometimes known as PEMDAS:

$color(red)(P)$ - Parentheses (also known as Brackets)
$color(blue)(E)$ - Exponents
$color(green)(M)$ - Multiplication
$color(green)(D)$ - Division (this has the same weight as M and so I gave it the same colour)
$color(brown)(A)$ - Addition
$color(brown)(S)$ - Subtraction - (again, same weight as A and so the same colour)

So with $-12-4+(8xx4)$ we have a parenthesis:

$-12-4+color(red)((8xx4))$

$-12-4+color(red)((32))$

Now we have addition and subtraction, so we read from left to right and evaluate:

$-16+32$

$16$

How do you simplify -12-4+(8xx4)-12-4+(8xx4)?