Answer :
You have to multiply both top and bottom numbers by the same number so 2 equivalent ones would be 30/14 and 45/21.
One ratio equivalent to 15/7 is 30/14 (multipled by 2 ) another one is 45/27 (multipled by 3 )
You have to multiply both top and bottom numbers by the same number so 2 equivalent ones would be 30/14 and 45/21.