Integers and Word Problems

29, 30, 31

Three consecutive integers have a sum of 90. Find the three values?

$\begin{array}{rcll} (n-1) + n + ( n+1) &=& 90 \\ 3n &=& 90 \\ n &=& 30 \\\\ n_1 = n-1 = 30 - 1 &=& 29 \\ n_2 = n &=& 30 \\ n_3 = n+1 = 30 + 1 &=& 31 \\ \end{array}$