Question

Use elimination to find the solution to the system of equations.
Use elimination to find the solution to the system of equations.
https://media.studyisland.com/cgi-bin/mimetex.cgi?\begin{array}{rclC25C25}-x\ +\ 4y &=& 10\\4x\ +\ 6y &=& 4 \end{array}
A. https://media.studyisland.com/cgi-bin/mimetex.cgi?x\ =\ -2,\ y\ =\ 2
B. https://media.studyisland.com/cgi-bin/mimetex.cgi?x\ =\ -4,\ y\ =\ \frac{10}{3}
C. https://media.studyisland.com/cgi-bin/mimetex.cgi?x\ =\ 22,\ y\ =\ 8
D. https://media.studyisland.com/cgi-bin/mimetex.cgi?x\ =\ 4,\ y\ =\ \frac{7}{2}
@Ganpat

Answer 1

I can help with this.

Answer 2

You would have to multiply the opposite number from the second equation to the first.

Answer 3

So the number in the second equation is 4x

Answer 4

But the value in the first equation is -x.

Answer 5

So we can multiply 4 to -x instead of -4, because -x is already negative.

Answer 6

So 4 x -x = ? @leeaah

Answer 7

@leeaah What is 4 times -x?