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Maina: Let me rewrite this so it's a big clearer. Do you have these 3 equations?
07 December 2011
Ah, so you have been given:
And you need to find , is that right?
07 December 2011
yes
07 December 2011
So the first thing we need to do is get all of the on one side, and the numbers on the other.
07 December 2011
Can you do the next bit?
07 December 2011
We can do this by taking for each side like this:
Which simplifies too:
07 December 2011
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