Dividing by negative mixed

Susan really wants to find 2 2/3÷-1 3/7. She writes the division as 2 2/3×-1 7/3. What is wrong with Amelia's reasoning?

Correct answer:

x =  -28/15

Step-by-step explanation:

a=232=2+32=32 3+2=36+2=38=2322.6667 b=173=(1+73)=71 7+3=77+3=7101.4286  x=a/b=38/710=38:710=38 107=3 108 7=3056=1528=11513=1.8667

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