III. Identify the axiom or real number property that justifies each statement. 4. 9 + (-9) = 0 5. 0 + 8 = 8 6. (8)(7)=(7)(8) 7. 1001(1) = 1001 8. 11(1/11) = 1 9. Ax + x = x(a+1) 10. (0.1)(10) = 1
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