Question

uhh, i dont know any other way to put this up here, to find to the value of x and y:
5x-4y=3y-x+8

Answer 1

that's 1 equation and 2 unknowns.. not enough info

Answer 2

hey let me post a pic of it for u
you will better understand i hope! :D

Answer 3

that might help

Answer 4

here yer go!! this problem is evil
.

Answer 5

hm.

Answer 6

x+y=2x-4
5x-4y=3y-x+8

Answer 7

Solve the 2 equations

Answer 8

Important details are important, yes they are. Especially if they are geometry details.

Answer 9

ok im going to bed folks.. can someone help him/her solve the equations?

Answer 10

Sure, I got this. I think.

Answer 11

oooh i got it. omg. i feel smart

Answer 12

x-2x+4=y
-x+4=y

-7y=-6x+8
7y=6x-8

Plug in:
7(4-x)=6x-8
28-7x=6x-8
36=13x
x=13/36

Answer 13

Part two...

Answer 14

-13/36+4=y
y=131/36

Answer 15

that doesn't look right to me :/

Answer 16

No? It's late here, where did I mess up? :\

Answer 17

just think because it is a regular octagon all sides are equal so all equations are equal, Choose an equation that contains one variable, solve for it and substitute it into another equation.

Answer 18

But they all have both x and y in them, so you have to make a system of equations like bahrom7893 did.

Answer 19

Remember to change the subject to help you ;)

Answer 20

bahrom said to solve these:
x+y=2x-4, y = x - 4
5x-4y=3y-x+8, 5x - 4(x - 4) = 3(x - 4) - x + 8

5x - 4x + 16 = 3x - 12 - x + 8
x + 16 = 2x - 4
x + 20 = 2x
20 = x

Answer 21

So I made stupid algebra mistakes then. Right, makes sense, thank you very kindly! XD

Answer 22

you can still solve for one variable and substitute it into another equation to make that equation only have one variable. Then you can get a numerical value for that variable. You will then have to take this value and plug it into an equation to get the other.

Answer 23

y would = 16

Answer 24

then for the side that's x + y...20 + 16 = 36

and because there's 8 sides...36 x 8 = 288

Answer 25

so 288 would be the perimeter....

Answer 26

thanks so much guys! you all make so sexy to be learning!!

Answer 27

lol

Answer 28

Learning is always sexy.

Answer 29

sexy to be living in USA

Answer 30

anyway once again thanks, its 2am, shuteye is needed

Answer 31

Good night and good luck.

Answer 32

good nite, have sexy dreams....