Question

Ayuda plis método de eliminación
4x+3y=7
x+2y=4

Answer 1

Respuesta:

$y = \frac{9}{5 \\} \\ \\ x = \frac{2}{5}$

Answer 2

Respuesta:

x = 2/5 y = 9/5

Explicación paso a paso:

4x+3y=7

x+2y=4(x-4)

4x + 3y = 7

-4x - 8y = -16

-5y = -9 => y = 9/5 x = 2/5

Comprobación:

4(2/5) + 3(9/5) = 7

8/5 + 27/5 = 7 => 35/5 = 7 => 7 = 7

2/5 + 2(9/5) = 4

2/5 + 18/5 = 4 => 20/5 = 4 => 4 = 4

RPTA: x = 2/5 y = 9/5