xandermdel
xandermdel xandermdel
  • 03-04-2020
  • Mathematics
contestada

a solution of a system of linear equations

x - y = 5
- 3 x + y = - 1

Respuesta :

ghanami
ghanami ghanami
  • 05-04-2020

Answer:

one solution : (-2 ; -7)

Step-by-step explanation:

hello :

x - y = 5 ....(*)

- 3 x + y = - 1 ....(**)

by (*) : y=x-5

by(**) : y = 3x-1

3x-1 = x -5

3x-x=-5+1

2x= -4

x= -2

but : y = x-5    so : y= -2-5=-7

one solution : (-2 ; -7)

Answer Link

Otras preguntas

Selecciona la respuesta correcta. ¿______ tu los requisitos del trabajo antes de la entrevista? A. habria leido B. habrias leido C. habriais leido D. Habrian
What is the equation of the horizontal line that contains the point (-3,8)? Please show work
Select all expressions that are equivalent to 2x+3x+8-3x-2 A. 2x+6 B. 2x+10 C. 5x-3x+6 D. 5x-3x+10
What is the median of this list of numbers? 5, 10, 13, 7, 5
Fill in the blank with the correct Spanish form of the verb in parentheses. La profesora y yo __________ (study) la historia.
Es necesario hablar con nuestro gobernador de dos____ muy importantes A.el medio ambiente B.asuntos C.la injusticia D.la necesidad
Damien grew a plant from a leaf cutting. How did the plant reproduce
How do dolphins meet their basic needs
Which is the correct form of the verb in the conditional- perfect tense? Vosotros _____ participado en un programa de intercambio. A. habriamos B. habriais C. h
What was the motivation of the abolitionists?