Negative nine times a number equals -117

-9(x) = -117

Solve for "a number" (x). Isolate it. Note the equal sign. What you do to one side, you do to the other. Divide -9 from both sides.

-9x/-9 = -117/-9

x = -117/-9

x = 13

13 is your answer

hope this helps

Ithink if ur looking for a ratio it would be 12: 3