k - 5
10-k=5
k=22
8k-5
If you want to say "Nine is less than a number k," you would write 9<K. If you're asking for an equation, e.g. "Nine less than a number k is equal to that number divided by three," you would write k - 9.
It is: 5k-60
k - 15
It is: 5k-7
The formula is 2-k. The answer depends on the value of k.
k - 6
It is simply: k-4
3 - k
There are no numbers that are more than 5 but less than 3. 3 is less than 5, so anything that is less than 3 is also less than 5.