Step-by-step explanation:

6 and 7 and 8

Hope it helps

Answer:

so the three consequtive numbers are 6,7,8

Step-by-step explanation:

let the three concequtive numbers be x,x+1,x+2

X+X+1+X+2=21

3x+3=21

x=6

so the three consequtive numbers are 6,7,8.

please mark as Brainlist,as i helped you early.