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Let's just do one and you'll see
how it works:
See how these guys are the same,
but with a different sign?
If we add the two
equations -- straight down, those
x
critters are going to drop right out!
Just add "like terms"
and drag the "=" down to:
We've got one of
them... Now, we just need to get the
x.
To do this, you can stick the
y
into either of the original equations...
The second equation
is easier:
It looks like the
answer is (1,
6).
Check it! (In
BOTH equations!)
TRY IT:
Solve by elimination:
* Notice that the
y
is ready to drop out!
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