what is {}
Given info: {} = r
Problem: 6r - 8 = 8 + 6r
Plugging in {} for r gives us: 6{} - 8 = 8 + 6{}
Remove 6{} from each side: 6{} - 8 - 6{} = 8 + 6{} - 6{}
Simplify: -8 = 8
This is not possible, so there are NO SOLUTIONS