Posted by Gracieh on Thursday, January 11, 2007 at 3:37pm.
How do you divide fractions???
Cross multiply:
For example, 4/5 divided by 6/7 would be 28/30 or 14/15.
3/4 divided by 2/3 would be 9/8 or 1 and 1/8
Actually, the word cross multiply is a misnomer. What is being done is multiplying by the reciprocal
for instance 4/5 divide by 6/7 is the same as 4/5 multiplied by 7/6
3/4 divided by 2/3 is the same as 3/4 multiplied by 3/2
Both 14/15 and 9/8 are correct for the examples given; however, I don't call that cross multiplying.To divide fractions, invert the deonimator and multiply.
(4/5)/(6/7) = (4/5)*(7/6)=28/30=14/15
(3/4)/(2/3) = (3/4)*(3/2)= 9/8.

Math  maria, Wednesday, March 19, 2008 at 11:53am
(3/4 : 4/5)x 4/6

Math  dustin, Monday, March 1, 2010 at 10:34pm
.06 divided by 7.1

Math  sarah, Monday, March 15, 2010 at 6:50am
15/4:5/3

Math  Anonymous, Monday, January 11, 2016 at 6:11pm
2/5 × 3/9
Answer This Question
Related Questions
 intro cal  the first 3 term of a geometric progression are k4, 2k4, 4k+4. ...
 Math  could you tell me three equivalent fractions for each: 2/3 8/16 4/10 3/4 ...
 5th Grade Math  I cannot get my brain around questions like this: 1/4 divided ...
 Geometryyes or no  10/4=18/x would you cross multiply then divide to solve ...
 math  how do you solve this type of math problems that indicates to perform the...
 Math  What is the easiest way to solve for x. (these are fractions, not ...
 4th grade fractions  come up with 1 fraction up to 99 that has 2 different ...
 Math  x/3=2 x=2*3 x=6 x/6=3 x=3*6 x=18 How would I get the missing number? ?/3...
 division of fractions  Division of fractions is sometimes said to be ...
 Algebra  (x3)/5 = (x3)/x The x3 is over the 5 and the other x3 is over the ...
More Related Questions