Asked by Marie
                using echelon method
4x-2y=9
20x-10y=27
pls help with problem. Once I get 24x -2y 36 I'm confused after that.
            
        4x-2y=9
20x-10y=27
pls help with problem. Once I get 24x -2y 36 I'm confused after that.
Answers
                    Answered by
            Reiny
            
    Somebody expects you to solve a 2 by 2 system using matrices with echelon reduced form ??
That's like going to the corner store to buy milk in an 18 wheeler tractor-trailer.
Furthermore the system has no solutions, since if you multiply the first by 5, you get
20x - 10y = 45
now subtract the two to get
0 = 18
CONTRADICTION, so no solution.
    
That's like going to the corner store to buy milk in an 18 wheeler tractor-trailer.
Furthermore the system has no solutions, since if you multiply the first by 5, you get
20x - 10y = 45
now subtract the two to get
0 = 18
CONTRADICTION, so no solution.
                    Answered by
            Marie
            
    Thanks Reiny
    
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