Math (Check
posted by Bryan on .
1.Subtract and Simplify
2/3  1/5 = 1/2
2.Multiplu
4/5 * 6/7 = 24/35
3.subtract write an mixed numeral for the answear
20, 1/9
14, 7/15

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)