If x > 4 is known, simplify x-3 + 4-x

If x > 4 is known, simplify x-3 + 4-x

=x-4-(4-x)
=x-4-4+x
=0

When x ＜ 0, reduce 3x / 3=

When x < 0, 3x / 3 = - 3x / 3 = - X

System of inequalities x > A, x1-a, X

Because the former has no solution, we get a > or = B
So:
When a = B, there is no solution
When a > b, 1-A

If x is greater than a and X is less than B, there is no solution
Help. Reply before June 8

The general rule of no solution is "no place to look big or small"
So, according to this theorem,
If B < x < A has no solution, then
A < B (a ≤ B is OK, but in high school, it's a solution)