Answer:
The answer is x < -1
Explanation:
The first step is to subtract 9 from both sides of the equation.
9 - x > 10 ---> 9-(9) -x > 10-(9) ---> -x > -1
Next, multiply both sides of the equation by -1.
-x > -1 ---> -x(-1) > -1(-1) ---> x < -1
The answer is x < -1
Thing to note:
When you multiply an inequality by a negative number, then greater or lesser than sign flips and the constant stays the same.