laurenyoungblood23 laurenyoungblood23
  • 01-11-2019
  • Mathematics
contestada

13) -3x - 4y = 8
-4x - 3y=6​

Respuesta :

nguyenminhnguyet82
nguyenminhnguyet82 nguyenminhnguyet82
  • 01-11-2019

Answer:

x = 0, y = -2

Step-by-step explanation:

-3x - 4y = 8  (1)

-4x - 3y=6​ (2)

Multiply (1) by -4 and (2) by -3, we have:

12x + 16y = - 32  (3)

12x + 9y= -18​ (4)

Subtract (4) from (3), we have:

(12x + 16y) - (12x + 9y) = - 32  - (-18)

<=> 7y = - 14

=> y = - 2

Replace y with - 2 in (3), we have x = 0

Answer Link

Otras preguntas

4x²-32=0 by any method
the founder of the annual medical science awards that are often called “america’s nobels” is also considered the founder of what field?
f(x)=0 if f(x)=-8x^2+6x+5
What ordered pairs name the origin
how many countries are there
classify each orbital diagram for ground-state electron configurations by the rule or principle it violates.
countries that start with d
How did the Cuban Missile Crisis bring the US to the brink of war with USSR?
It seems that the vice president has broken some laws. What can be done about the situation?
triangle inequality theorem