Confused with order of operations

Sep 2013
1
0
georgia
Hi All,
Looking for some clarity.

I had the following test problem in "order of operations"
36/4(5-3)+6 and gave 9 as the answer. According to the rules I was wrong. the answer was 33

If I had the equation Y=36/4(a+b)+6 and rewrite as:

36
Y= ___________ +6
4(a+b)

And use a=5, b=-2 then Y=9

What am I missing?

mfoam
 

Plato

MHF Helper
Aug 2006
22,492
8,653
I had the following test problem in "order of operations"
36/4(5-3)+6 and gave 9 as the answer. According to the rules I was wrong. the answer was 33

If I had the equation Y=36/4(a+b)+6 and rewrite as:
As posted "Y=36/4(a+b)+6" means \(\displaystyle Y=9(a+b)+6\).

If you had posted "Y=36/{4(a+b)}+6" then it would be \(\displaystyle Y=\frac{36}{4(a+b)}+6\).

It is all about grouping symbols .
 
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