Please help me asap! Thanks in advanced guys! :)

Answer:
I think I did it wrong but I try
Step-by-step explanation:
8x+20+11x-31
-8x -8x
20-31 =3x
+31 +31
51 =3x
17=x
Answer:
x = 17 because 8x + 20 equals 11x-31, you simplify both by subtrcting 8x from both sides to get 20 = 3x -31. Then you add 31 to both sides to get 51 = 3x. Then divide 3 from both sides and you get 17 = x