Can you or nybody plz help me??

Question

37) Solve the system of equations by using substitution. State the answer as an ordered pair.

-3x - y = -13

x + 2y = 6

38) State the equation that you wrote in the previous problem after making the first substitution.

Answer 1

2 (3x+y-13 = 0 )  -->  6x+2y-26=0  -->    6x - 26 = - 2y

x + 2y = 6  -->  x - 6 = -2y -->  x - 6 = -2y

Now they're equal to the same thing...so they're equal to each other now...

6x - 26 = x - 6     <<<<I think that's #38, but I'm not positive...

5x = 20

x = 4                 <<<<That's your first answer.

x + 2y = 6

4 + 2y = 6

2y = 2

y = 1                  <<<<That's your second answer.

(4, 1)                  <<<<Ordered Pair (x, y)

The beginning isn't great mathmatical form, but it's sufficient.

Answer 2

Why is this in the Language section ?! God the unvirse have to remind of school ?!!? let us enjoy what's left of summer XD

Answer 3

you need to make the quality of the y and the x equal with opposite signs:

-3x-y=-13

3x+6y=18-->times both sides by 3

--------------------add both equations

0+5y=5--> y=1

now subtitue for Y in any of the equations to solve for X:

x+2(1)=6--> x=4

good luck:)  hope that helped