I'm a little stuck on this question:
Find the ordered triple (p,q,r) that satisfies the following system:
p - 2q = 0
q - 2r = 8
p + r = 5
p - 2q = 0..........(1)
q - 2r = 8...........(2)
p + r = 5.............(3), solve for p, q, r
From (1) above, we get: p ==2q
Sub 2q for p in (3) above, and:
2q + r ==5...........(4)
q - 2r==8...........(2)
From these 2 simultaneous equations, we get:
q==18/5
r == - 11/5
p==[2 * 18/5] ==36/5