Question

If you wanted to eliminate the y variable by adding the two equations in the following system, what could be your first step?
x − y = 6
−4x − 4y = 10

Answer 1

any idea?

Answer 2

Add the two equations together.

Multiply the first equation by −4.

Multiply the first equation by 4.

Multiply the second equation by −4.

Answer 3

so which of these ,u think, may work?

Answer 4

If you aren't sure, you could try all three options and see which eliminates one variable

Answer 5

The second one I think

Answer 6

If you want to add then coefficient of y in first equation must be positive..
Yes you are right..

Answer 7

that's right
cause ull get