Explain.
2007-12-29 10:54:09 · 14 answers · asked by innosa 2 in Science & Mathematics ➔ Mathematics
-39/120 is a fraction obviously. To reduce, you have to find a common multiple they both share that you can divide them equally by. Heres how it works
1.) Try a few numbers, 39 is not divisible by 2 so try 3. It is.
2.) 39/3 = 13
3.) 120/3 = 40
4.) The last step is to rewrite as a fraction - 13/40
There ya go! Hope that helped!
2007-12-29 11:21:38 · answer #1 · answered by Anonymous · 0⤊ 1⤋
reduce by a factor of three:
-39/120 = (-13 X 3) / (40 X 3) = -13/40
2007-12-29 18:58:31 · answer #2 · answered by 2Cute2B4Got 7 · 0⤊ 0⤋
-39/120
= -39÷3/120÷3
= -13/40
2007-12-30 05:36:51 · answer #3 · answered by An ESL Learner 7 · 0⤊ 0⤋
both -39 and 120 are divisible by 3. -39/3 = -13 and 120/3 = 40. therefore, -39/120 = -13/40
2007-12-29 18:58:16 · answer #4 · answered by Joseph K 1 · 0⤊ 0⤋
lowest common denominator is 3... you can tell because when you add all digits together, they equal a number divisible by 3 (i.e.: 39... 3+9=12... 1+2=3) (120...1+2+0=3). so you divide 39 by 3 = 13, then divide 120 by 3 = 40. 13 is a prime number so it is reduced as far as it can go... -13/40.
2007-12-29 18:58:32 · answer #5 · answered by tobysmomanddad 3 · 0⤊ 0⤋
- 39 / 120 = - 13 / 40
2007-12-29 18:58:58 · answer #6 · answered by Como 7 · 1⤊ 0⤋
= - 39/120
= - 13/40
2007-12-30 00:36:41 · answer #7 · answered by Jun Agruda 7 · 3⤊ 0⤋
-13/40
-39/120 find the lcm and divide by it and this case it is 3
-39/120/ 3/3=-13/40
2007-12-29 19:31:45 · answer #8 · answered by Dave aka Spider Monkey 7 · 0⤊ 1⤋
steps:
1. what goes into 39 and 120 evenly?
2. is it reduced to its smallest?
3. a negative divided by a positive is a ____
i didnt solve it for you, you should learn how.
2007-12-29 18:57:03 · answer #9 · answered by Jane 3 · 1⤊ 0⤋
numerator and denominator reduce by a factor of 3:
-39/3 = - 13
120/3= 40
ans. -13/40
that's it! :)
2007-12-29 18:56:46 · answer #10 · answered by Marley K 7 · 1⤊ 0⤋