Answer:
cancel them out
Step-by-step explanation:
You can eliminate them since they cancel out.
In a ratio, you compare numbers by dividing them.
For example, if the ratio is 4 cm to 5 cm, then you can write
[tex] \dfrac{4~cm}{5~cm} [/tex]
Now divide the numerator and denominator by cm.
You get:
[tex] \dfrac{4}{5} [/tex]
As you can see, the same units cancel out.