The term \(-5a\) is like terms with any other term that contains the same variable raised to the same power. Therefore, it is like terms with:
- \(3a\)
- \(-2a\)
- \(\frac{1}{2}a\)
- \(7a^1\)
In general, any term of the form \(ka\), where \(k\) is a constant, is a like term with \(-5a\). Terms with different variables or with the same variable raised to a different power (such as \(b\) or \(a^2\)) are not like terms with \(-5a\).