(2x+11)࿁=(3x-40)࿁ x=?

Answer 1

I assume you meant to say

2x + 11 = 3x - 40

I have no idea what you meant by that strange symbol at the lower right corners. Anyway, subtract 2x from both sides and get

11 = x - 40

Add 40 to both sides and get

x = 51