Repeated Addition of Fractions using Pattern Blocks

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need help with D and E for both part a and b
Please clarify which questions you are asking about; the letters a and d appear twice, and b appears three times!

Also, please show us your work for any parts you can do, so we can see what you understand, and how you are interpreting the questions (which are a little odd out of context). (Apparently the context is more about fractions than about geometry; can you tell us what class this is for, at what level?)
 
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