8 - 3r = 2r + 2
Add 3r to both sides of the equation:
8 - 3r + 3r = 2r + 2 + 3r
8 = 5r + 2
Subtract 2 from both sides of the equation:
8 - 2 = 5r + 2 - 2
6 = 5r
Now divide both sides of the equation to find the value of r:
6/5 = 5r/5
r = 6/5
So the solution is r = 6/5