Question

Can someone Please help me? Fan and Medal.

Answer 1

need help

Answer 2

For the following system of equations, what is the x- value of the solution?
\[-x + 2y = 6\]
\[6y = x + 18\]
Choices -
A - -18
B - 0
C - -6
D - 3

Answer 3

Yes please.

Answer 4

@Jmmm

Answer 5

im not good at math

Answer 6

@SolomonZelman @scburchell11

Answer 7

sorry

Answer 8

It's ok.

Answer 9

\(\Large\color{black}{ -x+2y=6 }\)
\(\Large\color{black}{ 6y=x+18 }\)

re-arranging the first equation by adding x to both sides.

\(\Large\color{black}{ 2y=x+6 }\)
\(\Large\color{black}{ 6y=x+18 }\)

multiplying the first equation times -1,

\(\Large\color{black}{ -2y=-x-6 }\)
\(\Large\color{black}{ 6y=x+18 }\)

adding the equations,

\(\Large\color{black}{ -2y=-x~-6 }\)
\(\Large\color{black}{ ^+ }\) \(\Large\color{black}{ 6y=~~~x+18 }\)
----------------------
\(\Large\color{black}{ 4y=12 }\)

Answer 10

like this you can solve for y.
When you solve for y, plug in the y-value you get, into ONE of the ORIGINAL/INITIAL equations, and solve for x.

Answer 11

let me know if you need more help.

Answer 12

so I divide 4 by both sides?
\[y = 3\]
If y = 3. Then I plug 3 for y.
If I do that then x = 0. So the answer is B. Is that right? @SolomonZelman

Answer 13

yes.

Answer 14

Ok. Thanks so much!