Answer:
This is the associative property.
Step-by-step explanation:
The only operation in this expression is multiplication.
We know that the order in which we multiply numbers does not change their product; therefore we can group different numbers together and get the same product.
In this case, on the right hand side, 3 and 4 are grouped together first, then multiplied by 6. This gives us 12*6 = 72.
On the left hand side, 4 and 6 are grouped together first, then multiplied by 3. This gives us 24*3 = 72.