Hello all, this is my first post here and I hope to get some help. I am not as good at math as most of you so sorry if this is a really easy question 1. The problem statement, all variables and given/known data Solve for x and y: 7x-y=2 2x+2y=5 I can do these types really easy but on the next page of my book it says: Let a,b,c,d be numbers such that ad-bc != 0. Solve the follow for x and y in terms of a,b,c,d. ax+by=1 cx+dy=2 I am confused how to answer this. Can you give me a hint? Thank you. 3. The attempt at a solution I can't really give an attempt because I don't know where to start. For example the other linear equation I can times the top one by 2 to get -2y so I can take it away from the second equation. 14x-2y=4 2x+2y=5 16x=9 x=9/16 answer but I am stuck on ax+by=1, cx+dy=2 Thanks.