Identify the terms as like or unlike.
7r, -20r
Choose the correct answer.
The terms are like terms.
The terms are unlike terms.
The terms are unlike terms.
The terms 7r and -20r are like terms.
To determine whether the terms 7r and -20r are like or unlike terms, we need to compare their variables. Like terms have the same variable(s) raised to the same power(s), while unlike terms have different variables or different powers on the variables.
In this case, both terms have the variable "r" raised to the first power, and there are no other variables involved. Therefore, the terms 7r and -20r are like terms.