Posted by chris on .
100 4 Px + Py +40 = 0
100 4 Py + Px +40 = 0
Solve the above two equations to get Py = Px = 140/3.
How would you solve the two eq above??

math 
MathMate,
Note that the two equations are not identical.
Rearrange the equations:
100 4 Px + Py +40 = 0...(1)
100 4 Py + Px +40 = 0...(2)
4PxPy=140...(1a)
Px4Py=140...(1b)
Solve equations by elimination to get Px=Py=140/3
4*(1a)(1b):
15Px=700, or Px=140/3
Similarly:
(1a)4(1b):
3Py=420, or Py=140/3