Question

Use substitution to solve the system.
−2x+3y=14
x-2y=−8

Answer 1

okay so first find out what y is from one equation

Answer 2

@Ashleyy_Smith really ???

Answer 3

Are these 2 seperate problems?

Answer 4

I was trying to do it on paper but it was hard for me I got stuck

Answer 5

look at the 2nd equation u got the value of x in terms of y ....
so u can substitute is easily @Ashleyy_Smith

Answer 6

*substitute it easily in the 1st equation

Answer 7

@Ashleyy_Smith ????

Answer 8

Is it 4 for the first equation?

Answer 9

see re-arrange the 2nd equation so it would be x = 2y - 8
u get that

Answer 10

no that's the thing I don't get

Answer 11

x - 2y = -8
x -2y + 2y = -8 + 2y

Answer 12

ohhhhh

Answer 13

now u know wht to do/?

Answer 14

see u can even use equation 1 to get value of any one variable in terms of the other....bt tht would be really hectic :))

Answer 15

So I just do what I did with the first equation right?

Answer 16

hmmm wht do u mean???

Answer 17

see u got x = 2y -8
now plug the value of x in 1st equation...as did the previos time

Answer 18

-2x+3y=14
-2(2y-8)+3 = 14

Answer 19

y missing >_<

Answer 20

hmmm ??? :/

Answer 21

oh oops after the 3 :p

Answer 22

-4y + 16 + 3y = 14

Answer 23

go on :))

Answer 24

-7y +16 = 14?

Answer 25

hold on aint u kiddinng me
-4y + 3y = -7y ???? -_-

Answer 26

oh oops y

Answer 27

forgot there was a negative

Answer 28

really y?????

Answer 29

whts 4 - 5??

Answer 30

-1....... lol

Answer 31

so -4y + 3y = ??

Answer 32

-1 :p I thought it would be y cause I thought y is considered like 1

Answer 33

-y -_-

Answer 34

yes

Answer 35

-4 y + 16 + 3y = 14
-y + 16 = 14
now wht

Answer 36

hmm i dont know

Answer 37

isolate the variable on one side......
like wht would be x , if x + 2 = 5??

Answer 38

3

Answer 39

so whts y , if
-y + 16 = 14

Answer 40

0

Answer 41

lol

Answer 42

how?? :/

Answer 43

-2 jk lol. wanted to make u sad

Answer 44

so its
-y = -2
so y = ???
btw instead of sad I get pissed off -_-

Answer 45

thanks for letting me know ;) bahahah

Answer 46

won't do it anymore. maybe.

Answer 47

ok .... :))
y = ???

Answer 48

-2

Answer 49

why so ??? see
-y = -2
y = ???

Answer 50

2

Answer 51

did u get tht ???
why y = 2 ?

Answer 52

negative and negative = positive

Answer 53

makes a bit sense.... :)))
so as y = 2
wht would be x ??

Answer 54

-3

Answer 55

dazzle me -_- how ???

Answer 56

3 lol

Answer 57

and howz tht ???

Answer 58

really I am jst asking to plug the value of 'y' in any of the 2 equations and get x....
so get me
'x'

Answer 59

ohhhhh

Answer 60

i think 2nd equation would be simple right

Answer 61

yup

Answer 62

so x-2(2) = -8

Answer 63

go on.....

Answer 64

x-4 = -8

Answer 65

go on....

Answer 66

x - 4 = -8
- 4 -4
x = -12

Answer 67

How could u do this..... >_>
see u need to isolate x
-4 -4 = -8 -_-

Answer 68

oh oops -4

Answer 69

x = -4 ???

Answer 70

no 2

Answer 71

why ???
rhough
x = -4 was correct -_-

Answer 72

*though

Answer 73

oh thought we had to divide the -4 and -8

Answer 74

so x = -4 and y = 2

Answer 75

why divide ??// see when
x - 2 = 5
u add 2 on both sides

Answer 76

and if
3x = 2
in this case we divide by 3 /.... :/

Answer 77

and yeah
x = -4 and y = 2

Answer 78

yay finally

Answer 79

listen it took another 1hour today.... Do me a favor and dont let it go worthless ....

Answer 80

ok ??? @Ashleyy_Smith

Answer 81

yes

Answer 82

@rishavraj next topic will be elimination

Answer 83

lol k...bt dont forget to practice this.....

Answer 84

I won't thank u (:

Answer 85

goodluck on your test

Answer 86

u r most welcome :)))

Answer 87

ooo thanks ...I need tht ...I dont even know the syllabus.... or which test I gotta take in the first place @Ashleyy_Smith

Answer 88

:o! that's always the worst. Well, I'm going to eat dinner. I'm very hungry. I'll be on tomorrow (: thanks again!

Answer 89

Bye :))