2007-03-12 03:43:03 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
take lcm which is 60
{5(11)-1(4)}60
(55-4)/60
51/60
2007-03-12 03:55:56 · answer #1 · answered by Ali 3 · 1⤊ 0⤋
find a common denominator, which is 60, so:
11 / 12 - 1 / 15 becomes
= 55/60 - 4/60
= 51 / 60
2007-03-12 10:47:04 · answer #2 · answered by schatz101 3 · 2⤊ 0⤋
Find the lowest common denominator. It is 60.
For 11/12, multiply by 5/5 ---> 55/60
For 1/15, multiply by 4/4------> 4/60
55/60 - 4/60 = 51/60
2007-03-12 10:48:04 · answer #3 · answered by mortgagelns 3 · 1⤊ 0⤋
must have common denominators so, 11/12 becomes 55/60 (i took the top and bottom and times by 5) and 1/15 becomes 4/60 (i took the top and bottom times by 5) so, your answer is 55/60-4/60 which is 51/60
51/60
2007-03-12 10:48:27 · answer #4 · answered by Bailey 5 · 2⤊ 0⤋
= 51/60
2007-03-12 10:52:02 · answer #5 · answered by physicist 4 · 1⤊ 0⤋
60 is the common denominator:
55/60-4/60
51/60
(51/3)/(60/3)=17/20
2007-03-12 11:35:49 · answer #6 · answered by Anonymous · 0⤊ 0⤋
(11 / 12) - (1 / 15) = 0.85
Different from all the answers- in decimal. =)
2007-03-12 10:50:46 · answer #7 · answered by arpnuck 3 · 1⤊ 0⤋
.....this should probably be ur school homework...owh well
1st = change the denominator into the same value
2nd = change the numerator with the one u get by multiplying the denominator (example = if 2/3 - 5/6 = 4/6 -5/6)
3rd= subtract the numerator as usual
2007-03-12 10:50:23 · answer #8 · answered by sand_wraith92 2 · 1⤊ 0⤋
use 60 as lcd
11/12=55/60
- 1/15=5/60
-----------------
50/60=5/6
2007-03-12 10:48:15 · answer #9 · answered by Dave aka Spider Monkey 7 · 2⤊ 0⤋