Answer :
Answer:
there are no like terms
Step-by-step explanation:
-x + 21 = -x + 21
The coefficient of the expression -x + 21 is -1.
A coefficient refers to a number or quantity placed with a variable. It is usually an integer that is multiplied by the variable next to it.
The negative sign right next to x represents the coefficient of -1. It's the same thing as -1 • x + 21.
A coefficient refers to a number or quantity placed with a variable. It is usually an integer that is multiplied by the variable next to it.
The negative sign right next to x represents the coefficient of -1. It's the same thing as -1 • x + 21.