Question

find the cosecutive number such that the sum of the first and second is 15 more than the third​

Answer 1

Let the 3 consecutive number be x, x+1, x+2

So,

x+(x+1)-(x-2)

x+x+1-x-2=15

x-1=15

x=15+1=16

x=16

Therefore,

x=16

x+1=16+1=17

x+2=16+2=18

So, 3 no's are 16,17,18