For this case we must simplify the following expression:
![\frac {-3x ^ 6y ^ 4} {- 3x ^ 6y ^ 4} =](https://img.qammunity.org/2020/formulas/mathematics/middle-school/3pvozlo9m7bb1ehvyuzgn6mtx614u5jumy.png)
The signs "-" are canceled, then:
![\frac {3x ^ 6y ^ 4} {3x ^ 6y ^ 4} =](https://img.qammunity.org/2020/formulas/mathematics/middle-school/czk5yktv92otcdo4et7lgtzuaxm1itedyp.png)
In this case, it is observed that we have a unitary fraction, which by definition is that which has the numerator equal to the denominator.
Example:
![\frac {a} {a} = 1](https://img.qammunity.org/2020/formulas/mathematics/middle-school/uwdzbgmoetb2piggi9udkbra9a1ek57y9y.png)
So:
![\frac {3x ^ 6y ^ 4} {3x ^ 6y ^ 4} = 1](https://img.qammunity.org/2020/formulas/mathematics/middle-school/x0znppdxujy9e451zs4w3yu3dgcqkmugir.png)
Answer:
1