Question

solving systems of elimination

-3x+7y=-6
10x-7y=-29



-x+3y=-12
-x+3y=-19

5x-3y=-10
-6x-3y=12

Answer 1

@pooja195
@Nnesha
@satellite73

Answer 2

do you know wat mean elimination method to solve system of equations ?

Answer 3

what - sorry

Answer 4

yes

Answer 5

i kinda solved the first question but idk what to do next

Answer 6

-3x+7y=-6 so than will be very easy than you know it
10x-7y=-29
----------------- assume same

so you have solved the first right sure ?

Answer 7

i multiply the top by 10 and the bottom by three and got

-30x+70=-60
30x-70=87

Answer 8

second

-x+3y=-12
-x+3y=-19 multiplie both sides by -1 and what will get ?
------------

Answer 9

In the first just eliminate y and find the value for x. The second I think is wrong because the two equation are the same.

Answer 10

@jhonyy9 did I do the first one right

Answer 11

so how you have learned it than you have there that will be eliminated x and y too what mean these situation ? how many zeros will have this system ?

Answer 12

sum up the equation to eliminate y and find x
then plug in x to equation 1 or 2 to find y

Answer 13

so @jhonyy9 what did i do wrong

Answer 14

The third multiply the first equation for -1 and sum the equation to eliminate y then find the value for x.

Answer 15

-3x+7y=-6
10x-7y=-29


in case of first you dont need multiplie it by nothing than you see when assum -7 by +7 will be eliminated - right ?

so what will get for x ?

Answer 16

-5

Answer 17

yup :)

Answer 18

whoops i messed up

Answer 19

3

Answer 20

-21/7 is not 3 ^_^ try again

Answer 21

-3

Answer 22

yup so x=-5 and y=-3 :) good job. do you have any questions?

Answer 23

i need help on the second one

Answer 24

im still kinda confused on how to do this

can you show me number 4

Answer 25

number three?

Answer 26

5x-3y=-10
-6x-3y=12
this one?

Answer 27

yes

Answer 28

-2

Answer 29

This is not how to teach someone @RhondaSommer

Answer 30

yep :)

Answer 31

and @Daniel56k i could care less about your opinion right now.

Answer 32

that is rude but okay

Answer 33

0

Answer 34

because honestly; you didnt reach out to help the asker @Daniel56k
@Pandabear78963 that is correct :) so x=-2 and y=0

Answer 35

and i have different teaching methods then you @Daniel56k if you dont like it then oh well ^_^

Answer 36

sorry if i appeared to be rude

Answer 37

that wasnt the intent

Answer 38

thank you i think i can finish the other 4 problems