To find the value of c that makes the equation true we have to solve for c.
-3-3/4(c-4)=5/4
-3-3/4c+3=5/4
-3 - 3/4c + 3 = 5/4
-3 + 3 - 3/4c = 5/4
0 - 3/4c = 5/4
-3/4c = 5/4
-3/4c/-3/4 = 5/4 / -3/4
c = 5/4 • 4/-3
c = -20/12
c = -5/3.
The correct value that c must be to make the equation true is c = -5/3.