Answer:
(i) No, we cannot apply commutative law to vector subtraction because \[\vec{a}-\vec{b}\ne \vec{b}-\vec{a}\] (ii) Yes, association law can be applied to vector subtraction because \[(\vec{a}+\vec{b})-\vec{c}\] \[=\vec{a}+(\vec{b}-\vec{c}).\]
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