SOLUTION: nine times the sum of 8 and some number is -18.

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Question 558696: nine times the sum of 8 and some number is -18.
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
9(8+x)=-18
72+9x=-18
9x=-18-72
9x=-90
x=-90/9
x=-10