6. Write down the additive inverses of these numbers. \( \begin{array}{ll}\text { a) }-21 & \text { b) } 56 \\ \text { c) }-101 & \text { d) }-1\end{array} \)
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The additive inverse of a number is the value that, when added to the original number, results in zero. For your numbers: a) The additive inverse of -21 is 21. b) The additive inverse of 56 is -56. c) The additive inverse of -101 is 101. d) The additive inverse of -1 is 1. Now you can think of additive inverses as the ultimate “cancel culture” in mathematics since they perfectly balance each other out! So, whenever you're dealing with addition, just remember that every number has its match, working together to keep the equation in balance!