odelllinkin2002 odelllinkin2002
  • 01-11-2017
  • Mathematics
contestada

3x+5y=2 and 9x+11y=14 equals

Respuesta :

choixongdong
choixongdong choixongdong
  • 01-11-2017
3x+5y=2 (1)
9x+11y=14 (2)

multiply equation (1) by 3
9x + 15y = 6

so
9x + 15y = 6 (1')
9x + 11y =14 (2)
-------------------------subtract
4y = -8
 y = -2

3x+5y =2
3x+5(-2) =2
3x - 10 = 2
3x = 12
x = 4

answer
(4, -2)
Answer Link

Otras preguntas

Do you think that science is a waste of time?
What is 3/4 divided by 12?​
What are gamma rays, how are they used?
Janelle is in charge of bringing in dry erase markers for everyone in her math group to use to work on a project. She brings 3 markers for each person in her gr
A wire is ⅝ meters long. it is divided into 2 equal parts. what is the length of each part​
Explain in 3-4 sentences how mitosis supports the body in everyday function.
what is 54/9 as a whole number?
please help me in this question​
Pros and Cons of the Virginia Plan Pro: Con:
Quel traitement pallas athéna fait - elle d’abord subir à Arachné?