A: 20/12
B: 4/3
C: 1 7/12
D: 1 1/2
2007-10-20 17:05:49 · 8 answers · asked by acuraboy1978 2 in Science & Mathematics ➔ Mathematics
4/12 + 9/12 + 6/12 = 18/12 = 1½
OPTION D
2007-10-20 21:44:27 · answer #1 · answered by Como 7 · 0⤊ 0⤋
What you need to do is find a common denominator for the three fractions in your problem. You can do this by finding the least common multiply of 3, 4, and 2. This number is 12.
1/3 = 4/12
3/4 = 9/12
1/2 = 6/12
Add them up and you get 19/12, which is the same as 1 and 7/12.
So your answer is C.
2007-10-21 00:31:06 · answer #2 · answered by cornzxo 1 · 0⤊ 0⤋
Rewrite each of the fractions with a common denominator. The common denominator is 12.
Multiply each fraction by a special "1" to get a denominator of 12 without actually changing the value of the fraction.
1/3 (4/4) = 4/12
3/4 (3/3) = 9/12
1/2 (6/6) = 6/12
Now add these together.
4/12 + 9/12 +6/12 = 19/12
Write as a proper fraction
1 7/12
Answer is C.
2007-10-21 00:09:12 · answer #3 · answered by azianshrimp 2 · 2⤊ 1⤋
C. 1 7/12
find the common multiple for the denominators, which is twelve, and make the fractions correspond with that number.
1/3=4/12
3/4=9/12
1/2=6/12
add them all together, which equals 19/12.
make it into a mixed number, and viola:
1 7/12!
2007-10-21 00:11:23 · answer #4 · answered by Hally K 2 · 2⤊ 1⤋
You need to convert the fractions so they all have the same denominator. Then add them together.
2007-10-21 00:09:37 · answer #5 · answered by DWRead 7 · 0⤊ 0⤋
Why dont you use calculator???? ( Scientific Calculator)
2007-10-21 00:08:53 · answer #6 · answered by iHeartChem 2 · 1⤊ 0⤋
C
2007-10-21 01:02:44 · answer #7 · answered by Lucy in the Sky 4 · 0⤊ 0⤋
C
2007-10-21 00:11:20 · answer #8 · answered by Special K 3 · 0⤊ 1⤋