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

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Answer 1 · 2016-03-18T01:33:14

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

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#