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Sometimes, you'll have to make adjustments to both
equations to get something to drop out. When
possible, always go after the easier numbers!
Let's do this one:
We want to make these
10x
and -10x:
Remember to hit each guy!
* It's easy to
forget the last guys. |
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Let's stick
y = 0
into the first equation:
The answer is
(4,
0).
Check it!
YOUR TURN:
Solve by elimination:
* Use your head...
Which numbers are easier?
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