algebra- integer problems
posted by min .
i have this problem, I'm stuck on.
it says find 2 consecutive multiples of 9 whose sum is -153.
I started of my saying the 1st number is 9x and the 2nd is 9x+9.
I continued on to get, 9x+(9x+9)=-153 and solved it.
I got an irrelevant answer: -9.
I was wondering what I had done wrong.