About: http://webisa.webdatacommons.org/256960387

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	\[$450 = 3H + 2A\]\[$700= 5H + 3A\]now we want find A, so make 2 equations that one side of them is H and other side is something that have numbers and coefficient and A!
http://www.w3.org/ns/prov#wasQuotedFrom	openstudy.com