18. Systems of Equations and Matrices
Introduction to Matrices
Multiple Choice
Multiple ChoiceSolve the system of equations by using row operations to write a matrix in REDUCED row-echelon form.
4x+2y+3z=6
x+y+z=3
5x+y+2z=5
A
x=0,y=−3,z=4
B
x=−41,y=−419,z=211
C
x=1,y=4,z=−2
D
x=21,y=21,z=1
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