The answer is 1 and 1 out of 3. 4 ur info, I did all the hard maths work from Kumon and now I'm doing algebra and more.
appx. 30' 4.9"
1 divided by 21 plus 6 divided by 7 equals...
The answer is 6 / (1-5/7). 1- 5/7 = 2/7 6 / (2/7) = 6 * (7/2) = (6*7)/2 = 42/2 = 21. Simples!
6 / ( 1 - 5/7 )