If the system of equationsx + y + z = 5x + 2y + 3z = 9x + 3y + αz = � – McqOptions

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1.	If the system of equationsx + y + z = 5x + 2y + 3z = 9x + 3y + αz = βhas infinitely many solutions, then β – α equals:
A.	21
B.	8
C.	18
D.	5
Answer» C. 18

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