Question 562491
Input 4 and 503 into the function:
f(4)+4f(503)=20
f(503)+503f(4)=2515
So,
f(4)=20-4f(503)=20-4(2515-503f(4))=-10040+2012f(4)
So, 2011f(4)=10040
So, f(4)=10040/2011