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Four small rectangles are combined to make a large rectangle. Three areas are given. Determine the missing area, then write two different expressions for the total area

   3n     

 

 

 

 

?

mn

 

 

 

 

7m
 Jan 23, 2023
 #1
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The missing area is 21mn.  You can do the rest.

 Jan 31, 2023

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