Answer:
The equation (i) is the only algebraic equations.
Explanation:
From the given examples of equations the equation (i) is the only algebraic equations.
(i) 3.1x - 11.2 = 2.5x + 2.3.
This is an example of algebraic equation with single variable x.
(ii) ???? + ???? = 2????
This could be an equation with variable ???? but both the sides being equal they cancel each other and no equation remains.
(iii) 1/2 +1/2 = 2/4
This is not an algebraic equation since there is no variable. (Answer)