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March 30, 2015

March 30, 2015

Posted by **Mike** on Friday, January 22, 2010 at 10:28am.

5/6-1/3+ 7/8/(1/2)^3

Thank you for your help!!

- Math -
**Reiny**, Friday, January 22, 2010 at 10:47amWhen you posted this question last night it was like this:

http://www.jiskha.com/display.cgi?id=1264129011

drwls answered it correctly following the order of operation the way you typed it.

Now you changed the question.

do you mean (7/8) ÷ (1/2)^3 or

7 ÷ (8/(1/2)^3 ??

e.g. 4/5/6

if 4 ÷ (5/6)

then 4(6/5) = 24/5

if (4/5) ÷ 6

then (4/5)(1/6) = 4/30 = 2/15 , not the same

Please clarify.

A "triple decker" fraction like

7/8/(1/2)^3 is ambiguous

- Math -
**Mike**, Friday, January 22, 2010 at 11:22amI meant this one:

(7/8) ÷ (1/2)^3

- Math -
**Reiny**, Friday, January 22, 2010 at 11:51amok then

5/6-1/3+ (7/8) ÷ (1/2)^3

= 5/6-1/3+ (7/8) ÷ (1/8)

= 5/6 - 2/6 + 7

= 5/6 - 2/6 + 42/6

= 45/6

= 15/2

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