Question

What are the like terms in the expression below?

3mn – 4m + 2n + 7m – 5

a) 3, -4, 2, 7 & -5

b) 3mn, -4m, 2n, 7m

c) 3mn, 2n

d) -4m, 7m

e) There are no like terms.

Answer 1

D. -4m, 7m

Explanation:

Like terms are terms that can be added, subtracted, divided, and multiplied together. Since -4m and 7m both have the variable m, they are like terms. 3mn is not a like term because it has two variables which makes it different form -4m and 2n. It is its own term.