To find the limit of \lim_{{x \to 3}} (4-x) , we can simply substitute x = 3 into the expression 4-x .
Substitute x = 3 : 4 - 3 = 1
Therefore, the limit is: \boxed{1}
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Math question: Find the unknown angle θ in a triangle with side lengths a = 7, b = 9, and c = 12 using the cosine law.
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What is the length of the perpendicular bisector of a triangle if its base measures 12 units?
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