sierralinares sierralinares
  • 23-09-2017
  • Mathematics
contestada

What is the solution to the system of equations here?

{x - y = 7
{2x + y = -1

How did you solve this?

Respuesta :

dpokharnaotzjgn
dpokharnaotzjgn dpokharnaotzjgn
  • 24-09-2017
To get this, you have to use elimination which is to basically get rid of one of the variables:

Add the two equations to get :

3x=6
x=2

Then, plug in 2 for x to get y:

2-y=7
y=-5

Answer Link

Otras preguntas

saad has mass 80kg when resting on the ground at the equator what will be the centripetal acceleration on saad if the radius of earth is 6.4×10^6 meter
Which adaptation makes bipedalism possible? A.opposable digits B.large brain C.foramen magnum in back of skull D.elvis rotated inward
What is the concentration of ammonia in a solution made by dissolving 3.75 g of ammonia in 120.0 l of water?
How many grams of glucose are needed to form 150g of ethanol?
Which macromolecule catalyzes chemical reactions, thus be considered an enzyme?
Given what you know about glycolysis and regulation of metabolism by pfk, what is the likely mechanism by which pfk activity differs depending on atp concentrat
What did Thomas Paine do with his profits from the sale of "Common Sense"?
Which of these is the easiest mineral identification property to use when you want to know whether you have pyrite or actual gold? a. heft b. luster c. strea
How do you say i love my dog and my family in spanish?
Liza only hangs out with other people just like her in terms of her ethnicity, age, education, religion and so forth. what is a consequence of liza spending mos