2006-12-11 12:16:48 · 15 answers · asked by doublemcdonald 2 in Science & Mathematics ➔ Mathematics
you multiply by the reciprocal of one of them. For example:
2/5 divided by 7/13 is the same as 2/5 multiplied by 13/7. For multiplication of fractions you just multiply straigth across, so the answer of the example is 36/35.
2006-12-11 12:20:22 · answer #1 · answered by fred g 1 · 0⤊ 0⤋
Invert one of the fractions and multiply across the board. Then reduce the result to it's lowqest common denominator. In other words 2/3 x 1/8 would be 2/3 x 8/1 = 16/4 or 4/1
2006-12-11 20:21:44 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Example: (2/3)/(3/4) = (2/3)(4/3) = 8/9
You have been given how, but not why. The example is a big fraction with numerator = 2/3 and denominator = 3/4
When you multiply the denominator 3/4 by its inverse 4/3 you get 1
(3/4)(4/3) = 12/12 = 1
So the denominator disappears if you multiply it by its inverse
In order for a fraction to retain its value, you must then multiply its numerator by the same number
In detail:
[(2/3)(4/3)]/[(3/4)(4/3)] = (8/9)/1
This is why you multiply the numerator by the inverse of the denominator
2006-12-11 20:32:02 · answer #3 · answered by kindricko 7 · 0⤊ 0⤋
You have to invert your divisor then multiply:
Like if you have 3/4 divided by 4/5
you invert and multiply so that the problem now becomes
3/4 multiplied by 5/4 then you multipy
which gives you 15/16 as an answer.
2006-12-11 20:25:00 · answer #4 · answered by JUAN FRAN$$$ 7 · 0⤊ 0⤋
multiply the inverse
2/3 / 4/5 to solve multiply the inverse of 4/5 which is 5/4
2/3 x 5/4 2x5=10 3x4=12
10/12 now simplify
the answer is 5/6
2006-12-11 20:21:07 · answer #5 · answered by boricua2007 1 · 0⤊ 0⤋
Change the division to multiplication.
For example:
2/3 / 4/5
=2/3(5/4)
=10/12
=5/6
2006-12-11 20:18:50 · answer #6 · answered by anonymousperson 4 · 1⤊ 0⤋
invert the second fraction and multiply
4/5 / 2/3
4/5 * 3/2 = 12/10 reduce
6/5 or 1 and 1/5
2006-12-11 21:21:06 · answer #7 · answered by ikeman32 6 · 0⤊ 0⤋
If you devide by a fraction you solve it like this:
(1/3)/(1/2) = 1/3 * 2/1 = 2/3
2006-12-11 20:21:07 · answer #8 · answered by dutchess 2 · 0⤊ 0⤋
The easiest way to do it is to take the denominator fraction (the one on the bottom), flip it upside down and just multiply the two (multiply across the top and across the bottom).
2006-12-11 20:19:43 · answer #9 · answered by Peeps 3 · 0⤊ 0⤋
simple, flip the one your dividing by and multiply it. ex:
(1/6) / (2/3) =
(1/6)*(3/2) = (3/12) = (simplified)(1/4)
2006-12-11 20:21:03 · answer #10 · answered by whoops :) 5 · 0⤊ 0⤋