Question

Solve the system using the elimination method 3x+2y=11 and 4x+y=-2

Answer 1

so what we want to do is get one of the variables to cancel out

Answer 2

correct

Answer 3

im thinking the easiest way would be to multiply the second equation by 2

Answer 4

-2 sorry

Answer 5

in my opinion the elimination methood is so much easier than the substitution method lol

Answer 6

depends on the problem can go either way

Answer 7

so do you understand how to do this?

Answer 8

ok so i X -2 and go -8x+y=-4 is that correct?

Answer 9

you need to multiply everything by -2 so you would get -8x-2y=4

Answer 10

that would be a -4 correct because -2x2 = -4? :)

Answer 11

-2*-2=4

Answer 12

-2 (4x+y=-2)=-8x-2y=4

Answer 13

im sorry caculator error my bad you're right it equals 4. now that i have that what is my next step

Answer 14

add the two equations together

Answer 15

the y's should cancel out and leave you with x. simplify and you have your x value

Answer 16

i added them together and got -5x and is it -5x + or - 4y=7?

Answer 17

3x+2y=11
+-8x-2y=4
-5x=15

Answer 18

so what does x=?

Answer 19

what answer do you get before the step -5x=15?

Answer 20

what step are you talking about?

Answer 21

after you add then together what do you do

Answer 22

what's the step before -5x=15?

Answer 23

\[(3x+2y=11)+(-8x-2y=4)=-5x=15\]

Answer 24

understand?

Answer 25

yes thank you so idk if i may ask this or not but do you happen to have a facebook account? lol

Answer 26

ya

Answer 27

may i look you up or no?

Answer 28

if you look up my name you should be able to find it, same picture

Answer 29

ya thats fine

Answer 30

okay what's your name

Answer 31

Nick Relich

Answer 32

cool you live in green bay W?

Answer 33

ya