Example of Simplex Method, continued.
How much can we increase z?
x= 5/2 -3/2 y -1/2 z - 1/2 a => z <= 5
b = 1 + 5y + 2a => no restriction
c = 1/2 + 1/2 y -1/2 z + 3/2 a => z <= 1 most stringent (^)
x=2, y=0, z=1, a=0, b = 1, c = 0.
F= 25/2 - 7/2 y + 1/2 z - 5/2 a => F= 13.
Again, construct system of equations.
From (^) z = 1 + y + 3a - 2c.