Salutations!
What is the sum of the first two multiples of 6?
Lets solve this!
The first two multiples of 6 are------ 
6 × 1= 6
6× 2= 12
To find the sum, you need to just add the numbers.
6+ 12=  18.
The sum of the first two multiple of 6 is 18.
Hope I helped!