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

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

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