We can translate this sentence into an equation.
Let's call the first number (the lower one) by x.
Since we one two consecutive even numbers, the next even number will be x plus 2, because even numbers appear for each 2 consecutive numbers.
Thus, the first number is x and the second is x + 2.
We want x such that the sum of thoes numbers is equal to 30, that is:

Now, we can solve the equation to find x:

So, if x is 14, this means that the fisrt number is 14 and the next even number is 16.
Thus, the two consecutive even numbers are 14 and 16.