Quote:
Question: Write an expression for the sum of three consecutive odd integers.
Heres an example from the book:
Write an expression for the sum of an integer and three times the next larger integer.
Let x= an integer
(x+1) = the next larger integer
x+3(x+1) = the sum of an integer and three times the next integer.....

think of it in terms of number...
say the first odd integer is 1
the next is 3 and the one after that is 5
so it's basically 1+3+5
int, + next int + next int
or x+(x+2)+(x+4)
so as luckydick said...
3x+6...
(p.s you get more marks for showing working).