Find the least common denominator for fractions with denominators 9, 12, and 16.
2007-02-09 03:41:50 · 7 answers · asked by YAHOO SUCKS ASS 3 in Science & Mathematics ➔ Mathematics
9 18 27 36 45 54 63 72
12 24 36 48 60 72
16 32 48 72
your LCD is 72.
2007-02-09 03:59:59 · answer #1 · answered by Anonymous · 1⤊ 0⤋
The answer that ALWAYS gives you a common denominator is to multiply them all together. To get the lowest, break up the numbers into their factors: 9 x 12 x 16 is 3x3x3x4x4x4. Which could you leave out? The answer would be to use 3 x 3 x 4 x 4. The first two gives 9, then second and third gives 12, and the last two gives 16. So 9, 12, and 16 has to divide into it.
2007-02-09 11:57:14 · answer #2 · answered by Rob S 3 · 0⤊ 1⤋
9 = 3 x 3
12= 2 x 2 x 3
16= 2 x 2 x 2 x 2
To find the LCD, align all common factors and obtain the "total"
. . . . . . . . . . . . 3 x 3
2 x 2 . . . . . . x 3
2 x 2 x 2 x 2
=====
2 x 2 x 2 x 2 x 3 x 3 = 144
2007-02-09 11:47:19 · answer #3 · answered by Puggy 7 · 1⤊ 1⤋
USE L.C.M. METHOD .
you will get it easily. that is,
for numbers 9, 12 and 16 is
144.
2007-02-09 11:50:55 · answer #4 · answered by achyut s 1 · 0⤊ 1⤋
Check out this website...it explains it really well (if your textbook is inadequate).
http://www.helpwithfractions.com/least-common-denominator.html
2007-02-09 11:49:38 · answer #5 · answered by H. Scot 4 · 0⤊ 0⤋
to find the LCM of these fraction the following formula must be used LCM OF NUMERATORS/HCF OF NUMERATOR
and for HCF it is HCF OF NUMERATOR/LCM OF DENOMINATORS
I CANT COMPLETE THIS Q AS YOU HAVE ONLY GIVEN THE DENOMINATORS OF THE FRACTIONS
2007-02-09 11:49:46 · answer #6 · answered by lord k 2 · 0⤊ 1⤋
i think it's 1
2007-02-09 11:45:08 · answer #7 · answered by currious 4 · 0⤊ 2⤋