X-(4x-11)+(9-2x)=20-5x

Solve the equation: x - (4x - 11) + (9 - 2x) = 20 - 5x

• Expand/simplify the left side: x - 4x + 11 + 9 - 2x = (-5x) + 20

• So the equation becomes: -5x + 20 = 20 - 5x

• This is the same expression on both sides, so it holds for all x.

Conclusion: The equation is an identity; every real number x is a solution.