Question

What is `14 + 18 -:2 * 18 -7`, using order of operations?

Answer 1

`14+18-:2xx18-7=color(blue)169`

Explanation:

PEMDAS is an anagram that helps us to remember the order of operations.

`14+18-:2xx18-7`

There are no parentheses or exponents, so we start with multiplication and division from left to right.

`14+color(red)(18-:2)xx18-7`

Carry out the division highlighted in red.

`14+color(red)(9)xx18-7`

Carry out the multiplication highlighted in blue.

`14+color(blue)(9xx18)-7`

Simplify.

`14+color(blue)(162)-7`

Simplify.

`169`