Question

Which of the following equations has the solution x = all real numbers? x = x - 11 - x = 1 - x2x = 2 + 2x1 + x = 1 - x

Answer 1

Let's check

x = x -1

This has no solution

1 - x = 1-x

This has many solution, hence x = all real numbers

2x = 2 + 2x

This has no solution

1 + x = 1- x

This has just one solution

Therefore, the correct option is :

1 - x = 1- x