It is known that a and B are integers, and 1 / 4 is equal to one part of a minus one part of B. the value of a and B is calculated

It is known that a and B are integers, and 1 / 4 is equal to one part of a minus one part of B. the value of a and B is calculated

1/4=1/a-1/b
1/4=(b-a)/ab
ab=4b-4a
4b-ab=4a
b=4a/(4-a)
Because a and B are integers that are not zero,
So when a = 3, B = 12
When a = 2, B = 4