Posted by Mary on .
Which ordered triple is a solution of this system?
2x+yz=7
x2y+4z=15
x+2y=5z=17
(2, 6, 5)
(1, 3, 2)
(2, 5, 2)
(3, 1, 0)

Algebra  eh? 
Steve,
fixing the typo so the 3rd line reads
x+2y+5z=17
still doesn't produce one of the choices.
Another typo?