Question

Given the system of equations presented here:

2x + 4y = 14
4x + y = 20

Which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated?

Multiply the second equation by −4 to get −16x − 4y = −80
Multiply the second equation by −1 to get −4x − y = −20
Multiply the first equation by 2 to get 4x + 8y = 28
Multiply the first equation by −1 to get −2x − 4y = −14

Answer 1

can you help me

Answer 2

@pooja195

Answer 3

@iloveyou;*

Answer 4

@nerlineg

Answer 5

@DarkMoonZ can you help me

Answer 6

@Noelia

Answer 7

can you help me @nerlineg

Answer 8

which one do you think it is? and I reply to your message it wont send. :(

Answer 9

i think it is A @nerlineg

Answer 10

um.. y A?

Answer 11

because if you multiply it out thats the equation we might use

Answer 12

@nerlineg

Answer 13

is that right @nerlineg

Answer 14

ohh i didnt see your comment. but um... yeah your reason sound right to me! but now this looks confusing!

Answer 15

ok hold on

Answer 16

@Learner11 can you help us

Answer 17

@uri

Answer 18

hey @Learner11 do you know how to do this

Answer 19

:(

Answer 20

@Elsa213

Answer 21

This might help c: https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/basic-equation-practice/v/equations-3