If a/b=c/d, then a/b=(a+c)/(b+d) mathematical proof Oct 4, 2017 7:52:51 GMT Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by Tiago on Oct 4, 2017 7:52:51 GMT If a/b=c/d, then a/b=(a+c)/(b+d) mathematical proof (quicker version)