# NavList:

## A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

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Re: Are we all doing our math correctly?
From: Lu Abel
Date: 2017 Jul 11, 00:44 +0000
Any elementary algebra text will tell you to clear parentheses first.   So:

6 / 2 (1+2) =  6 / 2 * 3

The text will also tell you that you do multiplication and division before adds and subtracts.   We have none of them, only divisions and multiplications.  But there are no hard and fast rules in which order to do operators of equal precedence.

So is it (6/2) * 3   or  6 / (2*3)  ?

The former gives 9, the latter 1.

In the computer world, operators of equal precedence are usually done left-to-right, so a computer program would most likely give 9 as the answer.

To: luabel@ymail.com
Sent: Monday, July 10, 2017 5:10 PM
Subject: [NavList] Re: Are we all doing our math correctly?

According to the video, the correct answer is 9.

6 ÷ 2(1+2) =

gl

To: garylapook---.net
Sent: Monday, July 10, 2017 2:30 PM
Subject: [NavList] Are we all doing our math correctly?

What is the answer to the problem:
6  divided by 2(2 + 3) = ?
Since we post formulas on this site we may be having a miscommunications problem. Of course adding brackets or parentheses will solve it.
See:

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