Final answer:
The given expression 49x - 14 is already in its simplest form and equivalent to itself.
Step-by-step explanation:
The given expression is 49x - 14. To find an equivalent expression, we can simplify this expression further.
We can see that the expression does not have any common factors, so we cannot factorize it. Therefore, the expression 49x - 14 is already in its simplest form, and there is no other expression equivalent to it.
Therefore, the given expression 49x - 14 is equivalent to itself.