Ok so to solve for r you need to isolate the variable. This is what you do.
6r - 12 = 6 Add 12 to both sides. 6r = 18 Divide. r = 3 Lets check our answer. 6(3) - 12 = 6 18 - 12 = 6 6 = 6 It makes sense so r = 3 is the answer. I hope this helps love! :)
