Subtract 21. x + 21 - 21 = x.
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The inverse operation of adding 21 is subtracting 21. This means that if you subtract 21 from a number, and then add 21 to the result, you will get back to the original number.
An inverse operation undoes the effect of another operation. For example, addition is the inverse operation of subtraction, and multiplication is the inverse operation of division. Applying an operation and its inverse leaves you with the original value.
An inverse operation is an operation that "undoes" another operation. For example, addition and subtraction are inverse operations, as are multiplication and division. Using inverse operations allows you to reverse the effects of the original operation.
An inverse operation is an operation that reverses the effect of the original operation. For example, addition and subtraction are inverse operations. 2 add 5 is 7, subtract 5 is 2. The subtraction of 5 reversed the effect of adding 5. Multiplication and division are also inverse operations. Two functions f and g are inverse if f(g(x)) = g(f(x)) = x.
The inverse operation of addition is subtraction. Subtraction undoes addition by taking away a number from the sum to return to the original value.
To show the inverse operation of Exercise 5, you could demonstrate how to undo the steps of Exercise 5 in reverse order, resulting in the original input. This would help illustrate how the inverse operation undoes the effects of the original operation.