Find all real numbers X such that

18x-9>9 AND 2x-4>-10

So what we are going to do is the next thing:

Consider 18x-9>9 1.

add 9 to both sides 2.

divide both sides by the coefficient of x (that is 18 in this case)

Now Consider 2x-4>-10 1.

Then add 4 to both sides 2.

divide both sides by the coefficient of x (that is 2 in this case)

The final solution would be x < 1

Hope this can fit what you are looking for