Question

7+?=7 what property is that and what does the question mark =

Answer 1

The equation \(7 + ? = 7\) is an application of the **Additive Inverse Property**. The additive inverse of a number \(x\) is the number that, when added to \(x\), results in 0. In this case, to keep the two sides of the equation equal, the question mark must represent 0.

So, the question mark \(? = 0\).

Thus, the equation reads \(7 + 0 = 7\), which confirms the property.