Question

3х + чу =8
- 2х -8y= 1​

Answer 1

Respuesta:

x = 17/4; y = -19/16

Explicación paso a paso:

3x + 4y = 8... (1)

-2x - 8y = 1... (2)

Multiplicamos (1) × 2

6x + 8y = 16

-2x - 8y = 1

Sumamos:

6x + 8y - 2x - 8y = 1 + 16

4x = 17

x = 17/4

Multiplicamos (1) × 2 y (2) × 3

6x + 8y = 16

-6x - 24y = 3

Sumamos:

6x + 8y - 6x - 24y = 3 + 16

-16y = 19

y = -19/16