5x-8y = 25
-x+4y = -7

This is what I did:

5x-8y =25
-2x+8y = -14
_____________

x = 11/3??

Is this right? What are the next steps and how would you write this? :confused:

yes 11/3 is correct for x value. Now you must sub this value into one of the equations to get the y value.

Ok, thanks. But now if I plug into the first equation it looks like this:

5(11/3) - 8y = 25

What do I do now?

Multiply out the brackets and solve...

Just solve for y in that new equation the same way you solved for x before.

Quote:

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Originally Posted by Nosnosna

Just solve for y in that new equation the same way you solved for x before.

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Not exactly the same. Capuchin was correct by saying just multiply out the brackets and solve. Post your answer and we'll tell you if its right

I got -10/12? Is the answer 11/3, -10/12

Yes but remember that -10/12 reduces to -5/6

Good Job!

Great.. Thanks for all your help..

if the perimeter of the rectangle is t units and the area is 2t+5 squre units,what is the value of x?

Can anyone help me with my this que...

if the perimeter of the rectangle is t units and the area is 2t+5 squre units,what is the value of x?

You should post your question under your own new thread. Your question has nothing to do with elimination, and the thread is also a year and a half old.

2x-3y=-11
3x+4y=16

I got the answer is x= 3/6

Sigh COOLIOZ, have you read the previous posts? Especially that of morgaine?

Quote:

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Originally Posted by morgaine

You should post your question under your own new thread. Your question has nothing to do with elimination, and the thread is also a year and a half old.

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DANNYSENDIN, your answer is wrong. X = 4/17.

Yeah, thanks folks for wasting my time reading through this entire thread yet again.

Sigh.

and substitute 11 in equation (1)

5x-8y=25
5(11)-8y=25
-8y=25-55
-8y=-30
-8
y = 3.75

People, read the previous posts please. Problem solved already.

THREAD CLOSED