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x+y-3z a If the system x-2y = b is consistent, then 4a= O A.-2c+2b O B.-3c+2b OC. 2c-2b O D. 3c-2b O E. c-3b

x+y-3z a If the system x-2y = b is consistent, then 4a= O A.-2c+2b O B.-3c+2b OC. 2c-2b O D. 3c-2b O E. c-3b 2x-4z=c

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