2007-09-27 21:20:59 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
5 / 20 + 12 / 20 = 17 / 20
2007-09-28 03:28:07 · answer #1 · answered by Como 7 · 0⤊ 1⤋
Ahh.. trying to figure out that homework.
You need to get a common denominator. In this case we'll use (4*5) to get 20, but if your denominators were say 3 and 6, you could use 6.
1/4 + 3/5 =
5/20 + 12/20
See how I changed the numerator, 4*5=20 so 1*5 and 5*4=20 so 3*4. When multiplying (or dividing) part of the fraction, you must do the same thing to the other part.
Now that you have a common denominator, you can add the numerator.
5/20 + 12/20 = 17/20
This cannot be reduced any further, so you're done.
2007-09-27 21:37:33 · answer #2 · answered by Spinach Girl 2 · 1⤊ 0⤋
LCM of the denominators = 4 * 5 = 20
So 20 is the final denominator.
Multiply the each term by 20 to get the numerator, i.e.
20 * 1/4 + 20 * 3/5
= 5 + 4*3
= 5 + 12
= 17
Therefore, the fraction is 17/20
Hence, 1/4 + 3/5 = 17/20
2007-09-27 21:36:27 · answer #3 · answered by {flick} 3 · 1⤊ 0⤋
1/4 +3/5
you find the L.C.M of 4 and 5 which is 20, then yoy divide 20 by 4, get 5 and add 1 giving 6 PLUS 20 divide by 5 giving 4 and add 3 giving 7. so its 6+7=13/20. remember to give the answer in fraction form
the ans is 13/20
2007-09-27 21:38:27 · answer #4 · answered by fifib 1 · 0⤊ 0⤋
Multiply the denominators: 4*5=20
Divide 20 by 4 to get 5
Multiply 1 by 5
So the first fraction becomes: 5/20
Now divide 20 by 5 to get 4
Multiply 3 by 4
So the second fraction becomes 12/20
Now add 5/20 and 12/20 is 17/20
The answer as a fraction is 17/20
As a decimal it is 0.85
2007-09-27 21:40:34 · answer #5 · answered by Anonymous · 1⤊ 0⤋
x * 3/5 = 36 apricot truffles the place x is the entire form of truffles; consequently, 36*5/3=60=x 60-36=24=# of strawberry truffles 24*.25 =# of strawberry truffles bought = 6 60-6=fifty 4 truffles final. fifty 4*2/9 = # of truffles given away = 12 fifty 4-12 = forty two truffles left
2016-12-17 12:03:40 · answer #6 · answered by ? 4 · 0⤊ 0⤋