Final answer:
To solve the equation, move -21 to the other side and simplify. Then, multiply both sides by 11 to eliminate the fraction. Finally, isolate C by adding 231 to both sides.
Step-by-step explanation:
To solve the equation, we can start by moving the -21 to the other side of the equation:
-14 = C/11 + (-21)
Next, we can simplify the equation by combining like terms:
-14 = C/11 - 21
To get rid of the fraction, we can multiply both sides of the equation by 11:
-154 = C - 231
Finally, we can isolate C by adding 231 to both sides:
C = -154 + 231
C = 77