So I was helping my gf go over some GRE math questions, and we came across a strange question. Solve for x and y x=2y 5x<y+7 I said that the answer would be y<7/9 and x<14/9 this is the right answer, but she asked how that works. How do both the equality and inequality hold true at the same time? Shouldn't the answer be undetermined? I don't quite know how to answer the question. My opinion is that as long as both x and y are less than their respective inequality, then the equality will then hold. Are there any more precise thoughts or theories regarding the subject?