Question

,5x-2y=-1
4y=7. cuál es el valor de x ,y​

Answer 1

Respuesta:

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Answer 2

$5x - 2y = - 1 \\ 4y = 7 \\ \\ 5x - 2y = - 1 \\ y = \frac{7}{4} \\ \\ 5x - 2 \times \frac{7}{4} = - 1 \\ \\ x = \frac{1}{2} \\ \\ (x,y) = ( \frac{1}{2} , \frac{7}{4} ) \\ \\ 5 \times \frac{1}{2} - 2 \times \frac{7}{4} = - 1 \\ 4 \times \frac{7}{4} = 7 \\ \\ - 1 = - 1 \\ 7 = 7 \\ \\ (x,y) = ( \frac{1}{2} , \frac{7}{4} )$