the sum of three consecutive numbers is eighteen. Write an expression describing the equation and solve the state of the three numbers

1 answer

n = 1st
n+1 = 2nd
n+2 = 3rd

n+n+1+n+2 = 18
3n + 3 = 18

Can you find n?
Once you substitute the number for n to find the three numbers listed above. Then add them up to be sure that they do add to 18.