Posted by Bryan on Sunday, July 13, 2008 at 7:17pm.
Please see the last answer for the correction for 1.
2. is correct.
3. 20 1/9 - 14 7/15 =
You need to find a common denominator. 45 is divisible by 9 and 15
20 1/9 - 14 7/15 = 20 5/45 - 14 21/45
Now we need to change the first number to get a fraction larger than 21/45
20 5/45 = 19 50/45
19 50/45 - 14 21/45 = 5 29/45
Is this correct?
1. 1/3 > 7/10
2. prime factors of 441 are 1,3,9,7,49,441
3. prime factors of 27 are 1,3,6,9,27
1. 1/3 > 7/10
This is not correct. 1/3 is not greater than 7/10.
30 is the common denominator -- so 10/30 is less than 21/30.
2. Right!
3. Right!
1/3 = 10/
(4.9*10^-6)*(2*10^-4)
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