6x-2y=-244x-2y=-26

Question

I dont know what to do. I have to solve by the elimination method.

 

Answer 1

6x-2y=-244

  x-2y=-26

subtract the equations

5x=-218

x=-218/5

x=-43.6

-43.6-2y=-26

-2y=-26+43.6

-2y=17.6

y=17.6/-2

y=-8.8

(-43.6,-8.8)

 

 

Answer 2

elimination method you need to add or subtract the two equations in such a way that one of the variables, either x or y, drops out. Then the resulting equation will have only one variable and you can solve for its value. Once you have it, you go back to one of the original equations, plug in the value you have, and find the value for the other variable.

Then you will have a value for x and for y which is your solution.

 

If one of the equations has a -2y and the other equation has a +2y, then the y will drop out if you add the equations.

if one of the equations has a -2y and the other equation also has a -2y, then you subtract equations because

-2y - (-2y) = 0

 

6x - 2y = -244

  x - 2y = -26      we will subtract these equations to "eliminate" the variable y

 

5x = -244 - (-26)

5x = - 218

x = -43.6

 

We will use equation x -2y = -26 to solve for y

 

-43.6 - 2y = -26

-2y = 17.6

y = 8.8