Can someone please help me with this problem?
Help is greatly appreciated.
Find a+b+c given that x+y≠−1 and ax+by+c=x+7,a+bx+cy=2x+6y,ay+b+cx=4x+y.
$a + b + c = 5$
How do you know
Because that's how I did the problem.
Like so:
+99 
