The question mark can represent any number in the equation x + ? = 2 + x. This is because if you add or subtract the same number from both sides of the equation, the equation will still hold true.
For example, if we choose the number 1 to replace the question mark, the equation becomes x + 1 = 2 + x, which is true for any value of x.
Therefore, any number can be substituted for the question mark in this particular equation.
What number is the question mark suppose to be in the equation x + ? = 2 + x
1 answer