Question

Solve the system using elimination.

x + 5y = –28
4x – 5y = 13

(–5, –3)
(–2, –5.2)
(-3, -5)
(5, 4)

Answer 1

add and get
\[5x=-15\] then solve that one

Answer 2

Let me interpret what he said:
"add and get " means
x + 5y = -28
4x -5y =13
---------------
5x = -15

Answer 3

Now divide both sides by 5 to get x
plug back one of the equation to get y. dat sit

Answer 4

the first answer im confused

Answer 5

hey, -15/5 = -5??? if you say the first answer is the correct one, hehehe

Answer 6

ha ha I said I think but was not sure lol

Answer 7

-15/5 =??

Answer 8

3 lol

Answer 9

-3 , not 3

Answer 10

and how many options have -3 as the first number?

Answer 11

you have only 1 option, that is (-3, -5) , no choice for you. hehehe

Answer 12

so -3 -5 then lol

Answer 13

I always cheat on that way, hehehe, save time.

Answer 14

now I am lost lol

Answer 15

why?

Answer 16

because u said -3 -5 and I thought it was the top answer

Answer 17

(-3, -5) means x =-3, y =-5 while the first answer is (-5,-3) , that is x = -5, y = -3
They are different, right?

Answer 18

yes

Answer 19

The solving process gives you x =-3, hence the first one is not the answer, right?

Answer 20

correct

Answer 21

so?? only option C gives you (-3,.....) I don't care what ..... is, just x =-3, then pick it

Answer 22

but I want the right answer lol

Answer 23

That is what I said "I cheat on it", instead of continuing solving for y, I pick it and 100% it is correct.

Answer 24

ok im going with c then