Seven divided by the difference of a number and 2, minus 6 divided by a number plus 2, equals 9 times the reciprocal of the difference of the number squared and 4. What is the number?

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point a is the center of the circle that passes through points e, f, and g and the center of the circle that passes through points x, y, and z.

she would want to sell 10 full-year subscriptions and at least 9 half-year subscriptions to get a total of at least $300. 

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