Users Online Now: 2,386 (Who's On?) Visitors Today: 102,807 Pageviews Today: 145,649 Threads Today: 42 Posts Today: 781 12:54 AM

 Back to Forum Back to Thread
Message Subject Math: 6÷2(1+2) = ?
Poster Handle Anonymous Coward
Post Content
Going left to right is part of the order of operations.
Quoting: Anonymous Coward 32614604

Technically no, but it gives young students a sense of order. Adding and multiplying is associative, so it doesn't matter what order you them in. Subtracting and division are the same as adding and multiplying. It is knowing things like this, as well as other details of maths, that allow you to see that this equation is solved as 1.

It is important to note that this stipulation about \from left to right"is entirely extraneous, because the associative laws of addition and multiplication ensure that it makes no di erence whatsoever in what order the additions or multiplications are carried out.
Quoting: Brekeley.edu

Quoting: caper_26

if it makes no difference whatsoever in what order the operations are carried out, then WHY are some people saying "1" and some people saying "9"?