The answer to your question is 25.
Since range is the difference between the highest and lowest value, simply subtract 100 from 200.
200 is the highest value in this set and 100 is the lowest value in this set.
Final answer is 100.
Range = 100
I'd suggest you begin by subtracting 4 / (x-4) from both sides. Doing that would leave you with 1 / (x-4) - 2 / (x+2) = 0.
LCD is (x-4)(x+2). Mult. all three terms by (x-4)(x+2). The resulting equation is
x+2 - 2(x-4) = 0. Then x+2 = 2x - 8 => x = 10
Subst. 10 for x in the original equation to verify that 10 is indeed a solution.
