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Which of the following is a pair of unlike terms?

Class 7Like and Unlike TermsAlgebra

A $7 p$ and $2 p$
B $6 x y$ and $9 x y$
C $3 a$ and $3 b$
D5m and 8m

Step-by-Step Solution

3 a

has variable 'a' and

3 b

has variable 'b'. Different variables, so they are unlike terms.

Answer: C)

3 a

and

3 b

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