It is known that a multiplied by 2 / 7 = B multiplied by 2 / 3 [A.B is not equal to 0], then the simplest integer ratio of a and B is [] to []

It is known that a multiplied by 2 / 7 = B multiplied by 2 / 3 [A.B is not equal to 0], then the simplest integer ratio of a and B is [] to []

Given that a times 2 / 7 = B times 2 / 3 [A.B is not equal to 0], then the simplest integer ratio of a and B is [7] to [3]