Question

An equation is shown below:

Answer 1

27x - 144 + 15 = 6x - 24
27x - 129 = 6x - 24
       +129         +129
      ---------      --------
           0            105
27x = 6x + 105
-6x    -6x
-----  ------
 21x    0

21x = 105

21x/21 = 105/21

x = 5

Remove brackets
Gather like terms
Get rid of the lone number
Transfer
Divide

Hope this helps :)