filou222 filou222
  • 23-11-2014
  • Mathematics
contestada

Substitution methode:
5x-3y=-11
x-2y=2

Respuesta :

Lilith
Lilith Lilith
  • 24-11-2014
[tex]\begin{cases} 5x-3y=-11 \\ x-2y=2 \end{cases}\\\\\begin{cases} 5x-3y=-11 \\ x =2y+2 \end{cases}\\\\Substitution \\5(2y+2) -3y=-11 \\10y+10-3y=-11[/tex]

[tex]7y=-11-10\\7y=-21\ \ / :7\\y=-3\\\\x =2*(-3)+2=-6+2=-4\\\\Answer: \ \ \begin{cases}x=-4 \\y=-3 \end{cases}[/tex]


Answer Link

Otras preguntas

Which statement is not true of John Brown's raid? President Buchanan ordered General Lee and Stuart to Harper's Ferry. John Brown became a martyr for most South
What did the battle of El Alamine reveal about hitler
There are 60 members in the school glee club. The glee club needs to raise $5000 for a trip to a national competition.The school agreed to contribute $1000 towa
Chef Romero takes a dozen large eggs from a refrigerator and uses an even number of eggs in a breakfast dish. The function p(e) = 6e gives the number of grams
Who were the two presidents that were five star generals?
who is odell Beckham Jr
Given the balanced equation representing a reaction: Cu + S==> CuS + energy Which statement explains why the energy term is written to the right of the arrow
Information in segments of human DNA can be expressed by a bacterial cell as a result of (1) sexual reproduction (3) genetic variability (2) random mutation (4)
Where did the Velvet Revolution occur? A. Poland B. Hungary C. Romania D. Czechoslovakia
who is odell Beckham Jr