State whether True or false :- 1. The difference of two rational numbers is always a rational number.
2. 2/3-3/5=3/5-2/3.
3. *1* is the additive identify for rational numbers.
4. Subtraction is communative on rational numbers.
5. There exists a rational number which is it's own additive inverse.
6. (19/-5)+(-3/11)=19/5+3/11.
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