Joimarish Joimarish
  • 18-09-2020
  • Mathematics
contestada

5x +7 y=-17
4x – 3y = -5
Substitute.

Respuesta :

leamsizerreitug
leamsizerreitug leamsizerreitug
  • 18-09-2020

Answer:

(x,y) = (-2, -1)

Step-by-step explanation:

We start off by substituting the value of "x".

5x+7y=-17

x=-[tex]\frac{5}{4} + \frac{3}{4}y[/tex]

We then solve 5[tex]5(-\frac{5}{4}+\frac{3}{4}y ) +7y= -17[/tex]

y=-1 *Substitute the value of "y"

x= -[tex]-\frac{5}{4}+\frac{3}{4}x(-1)[/tex]

x=-2

[tex]\left \{ {{-17=-17} \atop {-5=-5}} \right.[/tex] This works.

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