A system of equations is shown below:

-3x + 7y = -16
-9x + 5y = 16

Part A: Create an equivalent system of equations by replacing one equation with the sum of that equation and a multiple of the other. Show the steps to do this. (6 points)

Part B: Show that the equivalent system has the same solution as the original system of equations. (4 points)

Question

A system of equations is shown below:

-3x + 7y = -16
-9x + 5y = 16

Part A: Create an equivalent system of equations by replacing one equation with the sum of that equation and a multiple of the other. Show the steps to do this. (6 points)

Part B: Show that the equivalent system has the same solution as the original system of equations. (4 points)

anonymous · Answer

@IMStuck

anonymous · Answer

i have no idea how to do this, but the good news is only one more after this one

anonymous · Answer

this is my last one, just finished the other

imstuck · Answer

I really do not understand this at all!  I have never seen anything like it in my life!  Let me research this a bit.  Meanwhile, can you help me with something?  I see that you posted two things to me in a row.  How do you do that?  When I post to someone, even after I click Post, the words are still in this box and a "live preview of your reply" shows and neither one of them goes away.  It stays in my box and does not free it up for more typing.  How do I delete it after I click post?  answer me this while I look up your solution please!

yoyo123 · Answer

This is pretty simple is all you looking for an answer to x and y?

imstuck · Answer

I thought that, too.  Are you just solving for x and y?

yoyo123 · Answer

They have me lost in all that stupid wording english is a weak point of mine. Math is by far my best subject

anonymous · Answer

no idea

yoyo123 · Answer

well if you want the answer

yoyo123 · Answer

pick one of the systems doesn't matter and solve for x or y

anonymous · Answer

ok
thanks

yoyo123 · Answer

then plug that into the other system

imstuck · Answer

Does that make sense to you?  We can help if you don't understand.

yoyo123 · Answer

I would help you out on this but i can already tell by looking at it there are going to fractions all over the place. and i really dont want to do anything atm

anonymous · Answer

i cant figure it out -.-

yoyo123 · Answer

-9x + 5y = 16
+9x          +9x
5y=9x+16
divide by 5 on both sides
y=(9/5)x+(16/5)

anonymous · Answer

they're both negative 4

yoyo123 · Answer

so y equals that now put it inot the other equation

anonymous · Answer

at least thats what i got

yoyo123 · Answer

i wish i could show  you on paper its a lot easier on paper

anonymous · Answer

yea its -4

anonymous · Answer

thanks guys