Question

METODO DE SUSTITUCION
8X+2Y=24
4X-3Y=-16

Answer 1

Respuesta:

x = 5/4 y = 7

Explicación paso a paso:

8X+2Y=24 => x = 24 - 2y/8

4X-3Y=-16

4(24-2y)/8 - 3y = -16

96 - 8y/8 - 24y/8 = -16

96 - 32y/8 = -16

96 - 32y = -128

-32y = -224 => y = 7

8x + 2(7) = 24 => 8x = 10 => x = 5/4

Comprobación:

8(5/4) + 2(7) = 24

10 + 14 = 24 => 24 = 24

4(5/4) - 3(7) = -16

5 - 21 = -16 => -16 = -16

RPTA: x = 5/4 y = 7