Question

What is the value of the y variable in the solution to the following system of equations?
5x + 3y = 7
3x - 5y = -23

-1

1

-4

4

Answer 1

give me one min

Answer 2

alright

Answer 3

5x + 3y = 7
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-3y' to each side of the equation.
5x + 3y + -3y = 7 + -3y
Combine like terms: 3y + -3y = 0
5x + 0 = 7 + -3y
5x = 7 + -3y
Divide each side by '5'.
x = 1.4 + -0.6y
Simplifying
x = 1.4 + -0.6y
now for 3x - 5y = -23
3x + -5y = -23
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '5y' to each side of the equation.
3x + -5y + 5y = -23 + 5y
Combine like terms: -5y + 5y = 0
3x + 0 = -23 + 5y
3x = -23 + 5y
Divide each side by '3'.
x = -7.666666667 + 1.666666667y
Simplifying
x = -7.666666667 + 1.666666667y

Answer 4

Seriously?

Answer 5

even im confusd

Answer 6

Yeah.. It has to be one of the answers above

Answer 7

lol well i sovled both am i suppose to do this? or that
3*5x + 3y*3 = 7*3
-3*3x + -5y*-3 = -23*-3 ????? den mover or to ur right?? sum like dat?

Answer 8

so lets start with the first equation do you know how to turn it into slope intercept form y=mx+b

Answer 9

yes. add 5x to both sides?

Answer 10

or 3y to both sides

Answer 11

yes 3y to both sides

Answer 12

Okay so now it would be

5x = 7 + 3y

Answer 13

ur solving for y right so other way around if ur tyrna elimnate y but here
Add '-5x' to each side of the equation.
5x + -5x + 3y = 7 + -5x
Combine like terms: 5x + -5x = 0
0 + 3y = 7 + -5x
3y = 7 + -5x

Answer 14

you make things complicated @dopekidsimmy

Answer 15

I dont think it becomes 7 + -5x

Answer 16

Maybe 7 - 5x?

Answer 17

it would be 3y=5x+7

Answer 18

and what happenes when u add a positive ad a negative

Answer 19

and a "

Answer 20

my b its 3y=-5x+7

Answer 21

Okay

Answer 22

so divide by 3 on both sides what do you gt

Answer 23

I dont see how you can divide that at this point

Answer 24

but i seem like its um solve im confused my self!? wowwww

Answer 25

y=-1.6x+2.3

Answer 26

Im confused.. None of this adds up to the answers above. I'll just have to ask someone else. But thanks for your help.
ps. if you dont know how to do this then you shouldnt be trying to help people on here.

Answer 27

Idk who to give the medal to

Answer 28

np

Answer 29

give it to jazzy she derserves it im confused

Answer 30

awwww thanks @dopekidsimmy and thanks @SavannahSaturn

Answer 31

lol no prob @jazzyfa30

Answer 32

My pleasure. and again I wasnt trying to be rude =)

Answer 33

oh my bad its open in another screen lol

Answer 34

butt hey!!!!!!!!! hello!!!!! anyone!!!! hello!!! testing!!! 1 2 3 !!!!

Answer 35

Oh hey mate :)