27 = 12c - 5(6 - 2c)
First I’m just going to flip the equation around to make it easier to read:
12c - 5(6 - 2c) = 27
Next we will multiply everything in the brackets by what is on the outside of the brackets (remember a negative times a negative is a positive):
12c - 30 + 10c = 27
Now I’m going to add the like terms (things that have the same letter):
22c - 30 = 27
Now lets isolate 22c by adding 30 to both sides:
22c = 57
Now divide both sides by 22 to get the value of c:
c = 2.59
I hope this makes sense and helped you, if it did then a thanks would be appreciated!
Also if you have any other questions please do just ask!
:)