Question: im stuck here please this question 19. (Complete without using dm) .. -(RAX) + (-RV-X) 20. (Complete without using qn) .. Aziz + -Vz HzShow

im stuck here please this question

19. (Complete without using dm) .. -(RAX) + (-RV-X) 20. (Complete without using qn) .. Aziz + -Vz HzShow by constructing annotated derivations that the following arguments are valid. Unless explicitly barred you may also use any of the derived rules, in addition to the basic rules. (2 points each)

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