Question

1)|9-х|<2 2) |х+7|>8

Answer 1

          |9-x|<2
   –2 < 9–x < 2
–2–9 < –x < 2–9
  –11 < –x < –7
      11 > x > 7
        7 < x < 11

             |x+7| > 8
x+7 < –8   и   x+7 > 8
x < –7–8        x > 8–7
x < –15          x > 1