0.5 repeating as a fraction is 5/9
0.5 as a fraction is 1/2
its 5/9 because it is closer to the next number since it is repeating.
the numbers in the decimals either end up as the numerator or the denominator
The sum is the answer to an addition problem
Example : The sum of 4 and 2 : 4 + 2 = 8
Let the two numbers be x and y
x + y = 5(x-y)
x + y = 5x -5y
6y = 4x
x= (6/4)y
x= (3/2)y
there the ratio is 3/2