Final answer:
Javier wrote an expression that is equivalent to the original expression.
Step-by-step explanation:
To determine which student wrote an expression that is equivalent to the original expression, we need to simplify the expressions and compare them.
Ivan simplified the expression to (3x + 2)/(6x + 2).
Javier simplified the expression to (6x)/(12x).
To compare these expressions, we can simplify them further by dividing both the numerator and denominator by their greatest common divisor.
Ivan's expression can be simplified to (3x + 2)/(6x + 2), which cannot be simplified further.
Javier's expression can be simplified to 1/2.
Therefore, Javier wrote an expression that is equivalent to the original expression.