Solution:
We are comparing two expressions: 'a + 6' and 'a + 4'.
- Since 'a' is a common part of both expressions, we can compare the constant terms: 6 and 4.
- Because 6 is greater than 4, the expression 'a + 6' will always be greater than 'a + 4', regardless of the value of 'a' (assuming 'a' represents a real number).
Comparison: a + 6 > a + 4