Find three consecutive even numbers that sum to 66

Find three consecutive even numbers that sum to 66

$$\underbrace{(a_2-2)}_{=a_1}+a_2+\underbrace{(a_2+2)}_{=a_3}=66\\\\ 3a_2=66 \quad | \quad :3\\ a_2=22\\ a_1=a_2-2=22-2=20 \\ a_3 = a_2+2=22+2=24\\\\ 20 + 22 + 24 = 66$$

20 

22

24