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#1 2007-01-27 14:42:29
- saall
- Member
- Registered: 2006-12-24
- Posts: 4
:dunnook please help me with this difficult sum . please !!!!!!
the sum is twisty and i need it for a exam only . please help . the sum is :- ( there are 4 options and i need the definition also )
the value of (-5) - (-48) / (-16) + (-2) x 6 is
a) -20 b) 20 c)-22 d)-10
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#2 2007-01-27 15:55:50
- Toast
- Real Member
- Registered: 2006-10-08
- Posts: 1,321
Re: :dunnook please help me with this difficult sum . please !!!!!!
If you need help with a problem, please post in the Help Me section 
I hope this is the right format:
We can take away the brackets immediately:
Then, using Bodmas (Brackets, Order, Division Multiplication, Addition Subtraction), or Pemdas (Parentheses, Exponents, Multiplication Division, Addition Subtraction), to work through the problem. Remember to do multiplication and division first. Also remember that:
and
So let's clear up the multiplications and divisions first
Please ask if you have further questions.
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#3 2007-01-27 15:57:28
- pi man
- Member
- Registered: 2006-07-06
- Posts: 251
Re: :dunnook please help me with this difficult sum . please !!!!!!
the value of (-5) - (-48) / (-16) + (-2) x 6 is:
Do the division and multiplications first.
-48 / -16 = 3 and -2 x 6 = -12
Substitute those values back in your original equation:
-5 - (3) + (-12)
-8 - 12 = -20
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#5 2007-01-28 00:12:41
- mathsyperson
- Moderator
- Registered: 2005-06-22
- Posts: 4,900
Re: :dunnook please help me with this difficult sum . please !!!!!!
Although you don't need to anymore because it looks like this has been resolved. Remember that for the future though.
And, *moved*.
Why did the vector cross the road?
It wanted to be normal.
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