Question

If you wanted to eliminate the y variable by adding the two equations in the following system, what could be your first step?

5x − 6y = 6
x − y = 12

My answer is Multiply the second equation by 6

AM i right? :)

Answer 1

Close. but you would need the second equation to have (+6y)

Answer 2

Wait no...

Answer 3

Thanks! :)

Answer 4

so it would be (-6)

Answer 5

So if we multiply it by 6y it will remain 6y we have to multiply it with -6

Answer 6

so you would have to multiply the second equation by −6 first?

Answer 7

@uri

Answer 8

Yes.

Answer 9

Ok thanks :)