Question 513058
Solve:

-3c-12=-5+c
-3c-12+12=-5+12+c
-3c=7+c
-3c-c=7+c-c
-4c=7
-4c/-4=7/-4
c=-7/4

Check:
-3(-7/4)-12=-5-7/4
21/4-12=-27/4
21/4-48/4=-27/4
-27/4=-27/4