Question 811815: Como resuelvo este sistema de ecuaciones utilizando el metodo de sustitucion?
2x+3y=7
x-4y=-2
Gracias! Found 2 solutions by TimothyLamb, richwmiller:Answer by TimothyLamb(4379) (Show Source):
You can put this solution on YOUR website! 2x + 3y = 7
x - 4y = -2
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2x + 3y = 7
(-2)x - (-2)4y = (-2)-2
-2x + 8y = 4
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add (sumar)
2x + 3y = 7
-2x + 8y = 4
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11y = 11
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answer (resultado)
y = 1
x - 4y = -2
x - 4(1) = -2
x - 4 = -2
x = 2
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(2, 1)
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