Question

Use elimination to solve the system of equations. Enter your answer as an ordered pair; example: (4, -5)
2x + y = 12
-5x - y = -33

Answer 1

add them together

Answer 2

wt will u get ?

Answer 3

-3x=-21

Answer 4

go on..

Answer 5

x=7

Answer 6

correct

Answer 7

so...wt is "y" ?

Answer 8

-5x+33=y

Answer 9

would that work?

Answer 10

-35+33=y
-2=y

Answer 11

that's correct bro..

Answer 12

(7,-2) :D and the last one

Use elimination to solve the system of equations. Enter your answer as an ordered pair; example: (4, -5)
5x - 3y = 42
8x + 5y = 28

Answer 13

13x+2y=70

Answer 14

nope.. don't add them together

Answer 15

Oh substitution?

Answer 16

no substitution either... questions asks for elimination

Answer 17

*facepalm* >.<

Answer 18

multiply first one by 5

Answer 19

25 x - 15y = 210 ----(1)

Answer 20

multiply the second by 3

Answer 21

24x + 15y = 84 ---(2)

Answer 22

now (1) + (2)

Answer 23

3 o.o?

Answer 24

5x - 3y = 42 ----(1)
(1) x 5
25 x - 15y = 210 ----(2)

8x + 5y = 28 ----(3)
(3) x 3
24x + 15y = 84 ---(4)

(2) + (4)

Answer 25

6

Answer 26

yep

Answer 27

(3,6)?

Answer 28

x = 6
y = -4

(6 , -4)

Answer 29

o.o Can you explain what you just did to me cause elimination I do not understand

Answer 30

in elimination ... u have to eliminate a term in order to find out the other one

Answer 31

our 2 equations were
5x - 3y = 42
8x + 5y = 28

we could use addition or subtraction and sometimes division for the elimination..

Answer 32

but here we can't do any of them cause the values of "x" an "y" r different in 2 equations,,,
but if we somehow manage to transform the 2 equations in a way such that there will be one term in the same value then we could use add or sub

Answer 33

so ... i followed these steps to get 15y in both equations
5x - 3y = 42 ----(1)
(1) x 5
25 x - 15y = 210 ----(2)

8x + 5y = 28 ----(3)
(3) x 3
24x + 15y = 84 ---(4)

'cause then i can use addition to eliminate y

got it ?

Answer 34

still confused ??

Answer 35

I see

Answer 36

It does make sense

Answer 37

so... thumbs up huh ?

Answer 38

Yes :p Thank you sir

Answer 39

You helped out so much :3

Answer 40

u r welcome bro...

Answer 41

Thank you again I can't describe how much I thank you

Answer 42

haha... lol then u r welcome again too bro...