Answer:
(a) \[\text{(}-\text{3}0\text{)}\div \text{1}0=-\text{ 3}\] (b) \[\text{5}0\div (-\text{ 5})=-\text{ 1}0\] (c) \[(-\text{36})\div (-\text{9})=\text{4}\] (d) \[(-\text{49})\div (\text{49})=-\text{1}\] (e) \[13\div [(-2)+1]=13\div (-1)=-13\] (f) \[0\div (-\text{12})=0\] (g) \[(-\text{31})\div [(-\text{3}0)+(-\text{1})]=(-\text{31})\div (-\text{31})=\text{1}\] (h) \[[(-\text{36})\div \text{12}]\div \text{3}=(-\text{3})\div \text{3}=-\text{1}\] (i) \[[(-\text{6})+\text{5}]\div [(-\text{2})+\text{1}]=(-\text{1})\div (-\text{1})=\text{1}\].
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