Answer:
Step-by-step explanation:
This problem seeks to tests our understanding of measurements and units
Kathy cannot compare the two measurements because the two units of measurement are not the same.
Now centimetres is 10 times bigger than millimetres.
What Kathy can actually do is to convert from one unit to another, that is from centimetres to millimetres.
<em>Since the units are not similar Kathy cannot compare them but she can convert from one to the other</em>
no solution
With some linear expressions, like this one, that has an answer of 0 has no solution