Answer
7
Work Step by Step
The multiplicative identity property holds that $a\times1=a$, for some real number $a$. In other words, the property holds that the product of 1 and any real number $a$ will be equal to $a$.
In this example, we can set $a\times 1=7\times 1$.
Therefore, the other side of the equation will be $a=7$.
