Answer:
r =9
Step-by-step explanation:
r + 3 = 3 ( r - 5 )
Distribute
r+3 = 3r-15
Subtract r from each side
r+3-r = 3r-r -15
3 = 2r-15
Add 15 to each side
3+15 = 2r-15+15
18 = 2r
Divide each side by 2
18/2 = 2r/2
9 =r
r +3=3r -15
r-3r= -15-3
-2r = -18
r=9
