Question

PLEASE HELP :3
Solve 2x + 5y = −13
3x − 4y = −8

(4, 1)

(−4, 1)

(4, −1)

(−4, −1)

Answer 1

@Jack1 for ones like these: there is no parenthesis, or exponents, so I staret with the multiplication.. I want to get my y's to one side.. how do I do that?
I divide them?

Answer 2

i like to subtract first to isolate the one term on one side
so 2x + 5y = −13
2x = -13 -5y
x = -(13/2) - (5/2)y

Answer 3

or if not, get them both in terms of 6x

Answer 4

2x + 5y = -13
so
6x + 15y = -39

and
3x - 4y = -8
so
6x - 8y = -16

therefore
6x = -39 - 15y
and
6x = -16 + 8y

Answer 5

AH I thought so, u do them apart and I knew I took the 5 from that side

Answer 6

2x + 5y = −13-------(1)
3x − 4y = −8 --------(2)

in equation 1

2x=-13-5y
x=-13-5y/2

put x in equation 2

3(-13-5y/2)-4y=-8
-39-15y/2-4y=-8
-39-15y-8y=-16
-23y=-16+39
-23y=23
y=-1

put y in equation 1

2x + 5y = −13
2x+5(-1)=-13
2x-5=-13
2x=-13+5
2x=-8
x=-4

Answer 7

6x = -39 - 15y = -16 + 8y
-39 - 15y = -16 + 8y
-39 = -16 + 23y
-23 = 23y
-1 = y

Answer 8

I see.

Answer 9

The next one I have I have to get the value of y.. is it the same way we get the value of x?

Answer 10

exactly the same way, it doesn't matter if the term is called x or y or q, its all the same when using simultaneous equations

Answer 11

Ok I think I gotcha

Answer 12

What is the value of y in the solution to the following system of equations?

5x − 3y = −11
2x − 6y = −14

−1

0

1

2

Answer 13

This is what I have. ill let u no what I get

Answer 14

cools

Answer 15

ok so I got

Answer 16

5x-3y=-11
+3y
____________
5x=-11+3y

Answer 17

correct?

Answer 18

where is +3y coming from?

Answer 19

yep

Answer 20

ignore uri, he's a little slow and apparently i hate him ;D

Answer 21

Oh..

Answer 22

Huh? I'm a girl..and that's not the way to talk.

Answer 23

Where do I go from 5x=-11+3y

Answer 24

sure u are... online anyway
an i bet u tell that to all the boys ;P

Answer 25

Ah? last time i checked..i was a girl.

Answer 26

double it
change it to 10x

Answer 27

..... sooo no one is going to help me but we will argue on my question?... Thanks guys

Answer 28

Now your confusing me and not helping me

Answer 29

5x=-11+3y
10x = -22 + 6

Answer 30

You are not even teaching her the right thing.Also,You are very mean and you don't know how to respond to someone..when they ask you a question.

I might link you this: http://openstudy.com/code-of-conduct

Next time if you're mean to me.I'll report you to Preetha. @Jack1

Answer 31

so thats equation 1 in a form we can use
now for equation 2:
2x − 6y = −14

change it so u get 10x on one side

Answer 32

sorry, back to equation 1: it should be
10x = -22 + 6y, not
10x = -22 + 6, my bad

now equation 2:
2x − 6y = −14 (times 5)
10x - 30y = -70 (add 30y to both sides)
10x - 30y + 30y = -70 + 30y
10x = -70 + 30y

Answer 33

so equation 1 is now
10x = -22 + 6y

and equation 2 is now
10x = -70 + 30y

so 10x = -22 + 6y = -70 + 30y

-22 + 6y = -70 + 30y
can u solve from here?

Answer 34

@Jack1 She made a new question http://openstudy.com/study#/updates/52120b0fe4b0450ed75d4d22

Answer 35

@raebaby420

Answer 36

Huehue.

Answer 37

god u are such a girl XP

Answer 38

You called me a boy dat mad me cry..:3

Answer 39

made*

Answer 40

im sorry i called u a boy, i was jus playing and i took it too far, my bad

Answer 41

It's alright.