Math Is Fun Forum

bronxsystem

Member

Registered: 2013-06-22

Posts: 63

mixed algebra fractions

bah i tried not to make thread i can do most of the problem its just the last part i get stuck.  i dont understand why the answer has +4 ><

change fraction into mixed expression

i can get the answer

the book says

but where do they get the +4 from ><

i divided

by a, then quotient 2a
then i multiply the divisor

which gives me

i put this under the dividend and subtract

i get answer

i divide -a by a which is 1 and i put that in quotient.

this is where i get stuck i think

i multiply the divisor by -1 and get

bah i think i just got it

(-2) - (- 2) = +4

Last edited by bronxsystem (2014-01-10 03:21:10)

irspow

Member

Registered: 2005-11-24

Posts: 1,055

Re: mixed algebra fractions

If you do the long division you get:
2a-1 with the remainder 4

so the answer is 2a-1+4/(a+2)

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I am at an age where I have forgotten more than I remember, but I still pretend to know it all.

bronxsystem

Member

Registered: 2013-06-22

Posts: 63

Re: mixed algebra fractions

yeah i finally got it thank you