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Module 1. Mathematics

(6 - 2) - (6 - 9) / (-3 + (-3))

  • 3 1/2.
  • 4.
  • 4 1/2.

Explanation

Following order of operations, work the brackets first: (6-2)=4 and (6-9)=-3, with the denominator (-3+(-3))=-6. Division comes before subtraction, so (-3)/(-6)=0.5, giving 4-0.5=3.5, or 3 1/2.

davidjameswatson1991@live.co.uk asking:

hey guys bit confused with this :(

Community Comments (8)

D
dimky Posts: 514 22.09.2014 / 18:43
Please write how do you calculate this step by step and we will find out where you are wrong.
D
davidjameswatson1991@live.co.uk Posts: 4 22.09.2014 / 18:45
(6-2) - (6-9) = 7 / (-3 +(-3)) is the bit that confuses me how do you get the half, haha confusing me here...
D
dimky Posts: 514 22.09.2014 / 22:18
You can't subtract (6-9) from (6-2) because first you have to do a division.
D
davidjameswatson1991@live.co.uk Posts: 4 22.09.2014 / 23:16
oh yeah bodmas! sorry dimky I had a bit of a moment!
D
dimky Posts: 514 23.09.2014 / 13:40
:)
Maybe we can change your nickname because as you see it is too long to be correctly displayed?
J
JCLARK1981 Posts: 2 12.11.2014 / 10:41
There are a set of brackets missing in this equation that give you confusion of where to start. The equation should be written as:
(6 - 2) - ((6 - 9) / (-3 + (-3)))
Then the working out would be as follows:
(6-2) - (-3)/(-6)
(6-2) - 0.5
4 - 0.5
3.5
Hope that helps...
J
JD2016 Posts: 54 11.09.2016 / 23:40
Definitely a set of brackets missing if 3 1/2 is the to be the correct answer.
D
dimky Posts: 514 13.09.2016 / 11:47
Hi JD. All good with brackets. :))

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