Hello, I have a quick question that I think seems stupid but I can't find an answer for it. It's about vectors in a mechanics module. Anyhow, this is the question: Determine p and q: p(4i + 3j) + q(12i + 5j) = 68i + 33j, where p and q are contants. I can only think to do this by trial and error to get p = 3.5 and q = 4.5. Is there a proper method to work out something like this?