Easy
Multiplicative inverse of (-13) is -
Explanation
Explanation
The multiplicative inverse (or reciprocal) of any number 'a' is the number that, when multiplied by 'a', gives 1. For -13, we need a number x such that -13 × x = 1. Solving, x = -1/13, since -13 × (-1/13) = 1. So the correct answer is -1/13, option (3).
PRO TIP
Re-check your working by substituting the answer back into the original question.