Question

{2x(y 3)-4=8x {7y=14x-21​

Answer 1

Respuesta:

x= -8 | y= -19

Explicación paso a paso:

2x (y-3)-4=8x

7y=14x-21

y=14x-21/7

y=2x-3

2x[(2x-3)-3]-4=8x

2x(2x-6)-4=8x

4x^2-12x-4=8x

4x^2-12x-4-8x=0

4x^2-12x-8x=4

4x^2-20x=4

4x-20x=√4

4x-20x=2

-16x=2

x= -16/2

x= -8

y=2x-3

y=2(-8)-3

y=-16-3

y= -19