Find the ordered pair (s,t) that satisfies the system
s/5 + 5t = 3
3t + 6s = 9
6s + 3t = 9 multiply the first equation by -30 to get
-6s -150t = -90 add these two together
- 147 t = -81
t = 81/147 = 27/49 Use this value in either of the equations to calculate 's'