The equation which represents x, the width of the border is 2(8-2x) + 2(4- 2x) – 18. What is the width of the border? oft
ft
1 ft
3 ft

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for ex: the reciprocal of 3/4 is 4/3. it is the opposite.

reciprocal definition:

a mathematical expression or function so related to another that their product is one; the quantity obtained by dividing the number one by a given quantity.

a² + b²= c²

24² + 7² = c²

c= 25