So you first count how much times the numbers go up,then you add the number you get it is 6+ you add them with 13 and you get 19.
Step-by-step explanation:
So you first count how much times the numbers go up,then you add the numbers so 1 is not enough 2 is not enough 3 is not enough 4 is not enough 5 is not enough 6 is enough, so we add the six with the number that we are adding which is 13,then you get 19
