I am apparently missing a few details from the process of solving this...
This is a question from the chapter 1.1 basic equations of the text book 'Algebra and trigonometry'
The question is:
r-2[1-3(2r+4)] = 61
I am supposed to isolate the variable and find the value of r.
The Attempt at a Solution
I tried to simplify the left hand side of the equation, then attempted to isolate the variable.
The answer is apparently '3'
Also, what is a good process to study? I am right now teaching myself algebra and trigonometry. Any tips about the studying process will be greatly appreciated.