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