my teacher'll kill me if i dont get this done! HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
2007-06-05 20:30:42 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
3/4 - 1/5
common denominator = LCM of 4 and 5 = 20
= 15/20 -4/20
=11/20
2007-06-05 20:34:40 · answer #1 · answered by Jain 4 · 0⤊ 0⤋
3/4 - 1/5= 15/20 - 4/20 = 11/20
20 being the 'common denominator'
2007-06-06 03:44:10 · answer #2 · answered by Carol B 1 · 0⤊ 0⤋
= 15 / 20 - 4 / 20
= 11 / 20
2007-06-06 05:35:58 · answer #3 · answered by Como 7 · 0⤊ 0⤋
find their least common multiple
multiples of 4=4,8,12,16,20,24
multiples of 5=5,10,15,20,25
so their common denominator=20
3/4-1/5
=15/20-4/20
=11/20#
2007-06-06 03:53:07 · answer #4 · answered by jackleynpoll 3 · 0⤊ 0⤋
3/4 = 15/20
1/5 = 4/20
15/20- 4/20 = 11/20
2007-06-06 03:33:54 · answer #5 · answered by ignoramus 7 · 0⤊ 0⤋
lol
3/4 = 15/20
1/5 = 4/20
so 15-4=11
answer 11/20
saved by answers again
2007-06-06 03:40:56 · answer #6 · answered by worldstiti 7 · 0⤊ 0⤋
Pay attention in school.
2007-06-06 03:38:43 · answer #7 · answered by Anonymous · 0⤊ 0⤋