Answer:
The given expression has two terms "3a" and "19".
Step-by-step explanation:
The given expression is
![3a-19](https://tex.z-dn.net/?f=3a-19)
A term is either a single number or variable, or product of numbers and variables. The signs "+", "− " and "/" are used to separate the variables.
In the given expression the terms are separated through negative sign.
The above expression is the difference of two expression "3a" and "19".
Therefore the given expression has two terms "3a" and "19".