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

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

angela210793 · Answer

any idea?

anonymous · Answer

Add the two equations together.

Multiply the first equation by −4.

Multiply the first equation by 4.

Multiply the second equation by −4.

angela210793 · Answer

so which of these ,u think, may work?

myininaya · Answer

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

anonymous · Answer

The second one I think

anonymous · Answer

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

angela210793 · Answer

that's right
cause ull get|dw:1344529283139:dw|