# Math

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using echelon method

4x-2y=9
20x-10y=27

pls help with problem. Once I get 24x -2y 36 I'm confused after that.

• Math -

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.

• Math -

Thanks Reiny

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