Question

What is the value of the y variable in the solution to the following system of equations?
13x - 6y = 20
7x + 4y = 18

2

1

-2

-1

Answer 1

help ):

Answer 2

-2?

Answer 3

im just watching cuz i have a similar system of equations problem myself lol

Answer 4

oh okay haha

Answer 5

I guess know one knows ):

Answer 6

for my problem im only given the equations, not multiple choice :/

Answer 7

hate how i forget these things, bump this thiing when the time comes XD

Answer 8

alright ill do it

Answer 9

13x - 6y = 20
7x + 4y = 18

make x the subject of the first equation
so u get
13x=20+6y
x=(20+6y)/13
now, put this value of x into the second equation
7[(20+6y)/13]+4y=18
now all u gotta do i make y the subject
can u do that?

Answer 10

ok sooo

Answer 11

-1 right?

Answer 12

1

Answer 13

darn close

Answer 14

http://www.wolframalpha.com/input/?i=7%5B%2820%2B6y%29%2F13%5D%2B4y%3D18+solve+for+y

Answer 15

still confused on solving my own thing, ill just post mine up :T