SOLUTION: Find two consecutive multiples of 9 whose sum is -153.

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Question 1007963: Find two consecutive multiples of 9 whose sum is -153.
Answer by josgarithmetic(39618) About Me  (Show Source):
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9%28x%29%2B9%28x%2B1%29=-153

x is any integer, and 9x is a multiple of 9, and the next multiple of 9 is 9x+9 or 9(x+1).


9x%2B9x%2B9=-153

18x%2B9=-153

18x=-153-9

18x=-162

x=-9, so the two consecutive multiples of 9 here are -81 and -72.