7/12 x 5/14 x3/5 x 4/7
7 3/5 + 6 2/3 divided by 4 1/6
7 3/4 divided by 5 1/6 1 5/9 divided by 2/13 (complex fraction)
2007-02-12 03:48:47 · 3 answers · asked by april p 2 in Science & Mathematics ➔ Mathematics
7/12 x 5/14 x 3/5 x 4/7 =
1/14
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2007-02-12 04:48:38 · answer #1 · answered by SAMUEL D 7 · 0⤊ 0⤋
1. Multiply the top 4 numbers together, then multiply the bottom 4 numbers together, then simplify.
(7/12) x (5/14) x (3/5) x (4/7)
(7 x 5 x 3 x 4) / (12 x 14 x 5 x 7)
420 / 5880
42/588 (divide top & bottom by 10)
21/294 (divide by 2)
7/98 (divide by 3)
1/14 (divide by 7)
1/14
2. Change to improper fractions
7 3/5 + 6 2/3 div. 4 1/6
38/5 + 20/3 div 25/6
The order of operations says do the division first, so let's look at 20/3 divided by 25/6. To divide fractions, we change the division to multiplication, and flip the second fraction over. This is called multiplying by the reciprocal.
20/3 divided by 25/6
(20/3) x (6/25)
(20 x 6) / (3 x 25)
120 / 75
24 / 15
8/5
Now we can go back to the equation
38/5 + (20/3 div 25/6)
38/5 + 8/5
(38 + 8) / 5
46 / 5 or 9 1/5
3. Not sure about this one, it looks like you have two separate problems in here. Change to improper fractions and use the same "multiply by the reciprocal" method from number 2 to solve all fraction division problems. If you need help with number 3, send me an email at bigdadyisu@hotmail.com.
2007-02-12 12:11:00 · answer #2 · answered by cubs_woo_cubs_woo 3 · 0⤊ 0⤋
ans 1) 1/14
ans 2 ) 9 1/5
ans 3 ) 1 1/2 and 10 1/9
2007-02-12 12:07:16 · answer #3 · answered by naveedbaig90 1 · 0⤊ 0⤋