anaidvilla121 anaidvilla121
  • 13-01-2019
  • Mathematics
contestada

What’s The elimination 7x+4y=-4 5x+8y=28

Respuesta :

mathecoach
mathecoach mathecoach
  • 13-01-2019

Answer:

7x + 4y = -4

5x + 8y = 28

II - 2*I

- 9·x = 36 --> x = -4

7*(-4) + 4y = -4 --> y = 6

Answer Link

Otras preguntas

how did paleolithic people acquire food from their natural enviroment
how did paleolithic people acquire food from their natural enviroment
1. (2xy^2)(-3x^2y) 2.(1/3x^2y)(-9xy^3)=
"Name the outcomes of the Berlin conference in 1884 and 1885"
How did Procopius link the cathedral's opulence (wealth) to true Christian values?
Some social analysts believe that postindustrial society will be followed by a biotech society. Such a society would be characterized by ________.
$12.95 dinner; 15% tip
where dose Michael Foreman visit for inspiration for his work
Which of these methods of heat transfer does not involve particles? Radiation Conduction Convection
An airplane cruises at 880km/h relative to the air. It is flying from Denver, Colorado, due west to Reno, Nevada, a distance of 1200km, and will then return. Th