Chapter 9 - Section 9.1 - Solving Systems of Linear Equations in Three Variables and Problem Solving - Exercise Set - Page 637: 9

No solution

A:$4x-y+2z=5$ B: $2y+z=4$ C: $4x+y+3z=10$ $2y+z=4$ $z=4-2y$ $4x-y+2z=5$ $4x-y+2(4-2y)=5$ $4x-y+8-4y=5$ $4x-5y=-3$ $4x+y+3z=10$ $4x+y+3(4-2y)=10$ $4x+y+12-6y=10$ $4x-5y=-2$ There is no solution as we have the same expression $(4x-5y)$ equal to two different values.