Justify Solutions of an Equation(One Variable)

Question

x-3=-3+x

A value of x that makes the equation true is , which when substituted into the equation and simplified makes the equation turn into  = .

Another value of x that makes the equation true is , which when substituted into the equation and simplified makes the equation turn into  = .

Answer 1

x - 3 = -3 + x

x = x add 3 to both sides of equation

All numbers make the equation true.

Answer 2

x - 3 = -3 + x

If you rewrite the second side of the equation it will be

-3 + x = x - 3

+x - 3 = x - 3

x - 3 = x - 3

x - 3 = -3 + x

- 3 + x = -3 + x

This proof show both are equal therefore any real number can be x.