Without using a calculator.
2006-07-15 13:15:06 · 5 answers · asked by Milo 3 in Education & Reference ➔ Homework Help
Multiply both of the denominators by each other - for instance
!/3 + 1/4 (3x4 =12)
so 4/12 + 3/12 = 7/12
2006-07-15 13:24:40 · answer #1 · answered by TLBFH 3 · 2⤊ 0⤋
look the fastest way is the calculator.......say u dont want to use the calculator u can do it memory wise....but for that u need to know a lot of tables.....u want to find the lowest common divisor......well for most even numbers its 2......and the rest would be 3 or so........i can tell u all the methouds.....but you havent made clear.....what ur looking for....because some people call it LCM >>>LCD.......plz elaborate on that one...and ill help u out
2006-07-15 20:25:47 · answer #2 · answered by Retrick 2 · 0⤊ 0⤋
Just multiply both the denominators together, for example:
(6/11) and (7/5) would give you (30/55) and (77/55)
2006-07-15 20:32:43 · answer #3 · answered by Pawl M Davis 3 · 0⤊ 0⤋
No way dude, Use calculator.
2006-07-15 20:18:08 · answer #4 · answered by Anry 7 · 0⤊ 0⤋
It's your memory, learn it.. study MAth.. Try...
2006-07-15 20:34:19 · answer #5 · answered by Anonymous · 0⤊ 0⤋