Answer :
To simplify the given expression, add like terms
[tex]7c+5c+2[/tex]Like terms are those whose variables are the same. In this case, the terms 7c and 5c are like terms. Then:
[tex]7c+5c+2=(7+5)c+2=12c+2[/tex]Therefore:
[tex]7c+5c+2=12c+2[/tex]