If the ratio of x+y to x−y is 279/262 , then the ratio of y to x can be written as a/b where a and b are coprime positive integers. Find a+b

Answer 1

(x+y)/(x-y) = 279/262

x+y=279
x-y=262
2x = 541
2y = 17
y/x = 17/541
...

Answer 2

find the ratio given 12:7