Question

Identify the like terms.

7c, –7d, 7cd, –12cd

A.
7c, 7cd

B.
7cd, –12cd

C.
7c, –7d

D.
7c, –7d, 7cd

Answer 1

hint
c = c
d = d
cd = cd
what line have entries with the same entity c,c or d,d or cd,cd

Answer 2

thanks..

Answer 3

good job answering without a direct answer..