Answer:
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Explanation:
(2,1) (8,9)
The formula that you would use is:
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So, 2 could be
and 1 could be
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and 8 could be
and 9 could be

When we insert these numbers into the equation, we get:
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When we solve that we get:
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Now we simplify it by dividing both the numerator and denominator by 2, which would give us:
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