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A farmer wants to plant three rectangular fields so that the widths are the same. The areas of the fields, in square yards, are given by the expressions 12x2y, 9xy2, and 21xy. What is the width of the files if x=3 and y=4?
Just plug in all the x and y with 3 and 4 respectively.
\(12*9*4 = 432\)
You try the other 2.