72 × 1.4666666666667 = 105.6 feet per second
Depends on where you are in the math book but this would be the most simple way.
n= number
sqar(-1) = i
if i understand correctly what you mean by this question the answer could be
14/24
28/48
you can just keep multiplying the top and the bottom by the same number to get an equivalent fraction
im sorry if i understood the question wrong, i hope this helped a little bit
By solving the equation
1/2 +x =4/7
x = 4/7 -1/2
x= 1/14