# How do you simplify 2(42 – 3) – 7 using order of operations?

Mar 19, 2018

71

#### Explanation:

BIDMAS/PEMDAS

Do brackets first

$42 - 3 = 39$

Then Multiplication

$2 \cdot 39 = 78$

then finally subtraction

$78 - 7 = 71$

Hopefully this helped

Mar 19, 2018

#### Answer:

$71$

#### Explanation:

There are two terms. Simplify each to a single answer which can be added and subtracted in the last step.

In each term - do the brackets first and then the multiplication and division.

color(blue)(2(42-3))" "color(green)(-" "7)
$\textcolor{w h i t e}{\times x} \downarrow$
=color(blue)(2(39))" "color(green)(-" "7)
$\textcolor{w h i t e}{. \times} \downarrow$
= color(blue)(78)" "color(green)(-" "7)

$= 71$