To determine Mario's present age, we can set up the equation based on the information given.
We know that in 7 years, Mario will be 19 years old. Therefore, we can write the equation:
\[ x + 7 = 19 \]
where \( x \) represents Mario's current age.
So the equation you can use to determine Mario’s present age is:
\[ x + 7 = 19 \]