Can someone please help me with this problem?
Help is greatly appreciated.
Find \(a+b+c\) given that \(x+y\neq-1 \) and \(\begin{align*} ax+by+c&=x+7,\\ a+bx+cy&=2x+6y,\\ ay+b+cx&=4x+y. \end{align*}\)
$a + b + c = 5$
How do you know
Because that's how I did the problem.
Like so:
+99 
