1/3 - 4/9 = (ans) 2/9 .
3/5-1/3 = (ans) 4/15
2/5-1/3 = (ans) 1/15
How this is is getting? I Can't understand how this answer is getting?
.Please give me a good explanation note of the method,thanks.
2006-08-20 02:40:12 · 3 answers · asked by cyberhomes4u . 1 in Education & Reference ➔ Higher Education (University +)
Take the second example. You have two fractions with different denominators (the number on the bottom). First you want to find a common denominator for them. The smallest number that is divisible by 3 and 5 is 15. You can always multiply a fraction by the number one in some form... so for the first fraction use 3/3 and for the second use 5/5 (remember 3/3 =1, and 5/5 =1). This will convert them to the following:
3/5 x 3/3 - 1/3 x 5/5 = 9/15 - 5/15 = (9 - 5)/15 = 4/15
2006-08-20 02:46:04 · answer #1 · answered by Anonymous · 2⤊ 0⤋
Well, if that first one is a typo then it's just common denominators and subtraction:
2/3 - 4/9 = 6/9 - 4/9 = 2/9
9/15 - 5/15 = 4/15
6/15 - 5/15 = 1/15
2006-08-20 04:29:11 · answer #2 · answered by NordicGuru 3 · 0⤊ 0⤋
http://mathforum.org/library/drmath/sets/mid_ratio.html
2006-08-27 05:24:08 · answer #3 · answered by hedychambers 2 · 0⤊ 0⤋