First, multiply the 2 times (x-5) and you get 2x-10 on the left side. Then on the right side, add up all the similar terms and you get 30 (the -3x and +3x cancel each other out. 2x-10=30 Then add 10 to both sides and you get 2x=40. Then divide both sides by 2 and you get x=20. Answer is B.
