algebra- integer problems

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Hi!
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.
thank you.

  • algebra- integer problems -

    It is right, your x is -9
    so the integers are -9*9 and -9*9+9, or
    -81 and -72

  • algebra- integer problems -

    whoops... hehe sorry.
    I forgot about the "pluging in"
    :D thanks for the help

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