Answer:
associative property of multiplication
Step-by-step explanation:
If we have 3 numbers x, y and z the associative property of multiplication says that:
[tex]x (yz) = z (xy) = (xz)y[/tex]
This means that the result will be the same regardless of the order in which the multiplication takes place.
In this case we have the following equality
[tex]2(xy) = (2x)y[/tex]
Note that the property used is the associative property of multiplication