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

What Progressive reform was most successful in reducing the prevalence of child labor in the United States in the early 1900s?
Ecris la forme du verbe que tu vois au passé composé. elles / s'animer Ecris la forme du verbe que tu vois. (au present) nous / s'asseoir
how to multiply 2.86*5.3
why did king write the letter from Birmingham jail
Scientific inquiry attempts to search out, describe, explain, and predict things that happen in nature. Which of the following best describes how progress is ma
Explain why Church and State viewed the breakthroughs as threats to their power
Help me please The values of x and y vary directly and one pair of values are given. Write an equation that relates x and y. Simplify completely. X=12, y=3.
What is 10/4+1/3? Pls
lines g and H are parrallel m < (note this should be the mark used for angles be)2 =110 degreesA. 6 degreesb. 70 degreesc. 110 degreesd 180 degrees
Why did the allies win ww2? A. Superior leadership B. Better economy C. More troops D. Wonder Woman