Question

I have a equavolent linear system but the question is asking me
a) how is equation 3 obtained from equations 1 and 2


equation 1 y=2x
equation 2 y=6-x
equation 3 2y=x+6

Answer 1

What am I supposed to be doing here?

Answer 2

Have you considered what happens if you combine them by adding or subtracting?

Answer 3

but how do I add two equations? thats what the answrs have but I dont really get it

Answer 4

Just like this:

y = 2x
y = 6 -x
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Answer 5

Thanks!

Answer 6

It's too simple, right? :-)

Answer 7

yea