I am trying to help my daughter divide fractions the problem is 2/3 divided by n = 3/4. I am having a terrible time figuring it out and of course she has no book for examples. Can anyone help? Thanks so much:)
Dividing by a fraction is the same as muiltiplying by its inverse:
for teaching, figuring it out like
(2/3) / n = (3/4)
(2/3) /= (3/4) *n
(2/3) / (3/4) = n
n= (2/3) / (3/4)
n= (2/3) * (4/3)
Welcome to the forum, !mathfun and lostmathmom.
I'm moving this to the Help Me forum ... hopefully you'll still be able to find it. I'll leave a redirect.
Thanks guys, and have fun on the forum.
all you need to do , is to put the divisor up side down and multiply
Last edited by Stanley_Marsh (2007-03-31 13:56:37)
Numbers are the essence of the Universe
(2/3) / (3/4) = [(2/3) / (3/4)] x [(4/3) / (4/3)] = (2/3) x (4/3) = 8/9
Here is a guide http://hubpages.com/hub/Adding-and-subtracting-fraction
These pages seem stronger than that one:
Welcome to the forum!
In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.