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

Can you help me with 18
Attachment Below: Pls help me! 1. How far (in miles) is the campsite from their car? 2. After how many hours will the hikers be 16 miles from their car?
i will give a crown if you are the first one to answer and if you get it right and if you just get it right then i will i give you a full star rating and a than
What do balloon mortgage and ARM have in common?
Determine the value of x in the diagram. Plz show your work.
Bacteria use sugar provided by legumes to produce nitrogen-containing compounds. An example would be
Which region on the map has the highest risk of future landslides?​​​
find the sequence 13, __, 33, __, 53
Subtract and simplify the expression. (14m + 3) − (34m + 15)
17. Energy stored in foods is ; digested food releases energy for movement and energy as heat.