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jieagilm27

Answer:  Difference between 21 1/4 - 18 2/4 =2 3/4

Step-by-step explanation:
You would subtract 21 1/4 - 18 2/4 you would take one from 21 and put it with the 1/4 to make 5/4 and the subtract 5/4 - 2/4=3/4 and 20-18 =2 so 2 and 3/4