1. If (11+x) is positive, but (4+x) is negative, what is one number that x could be?

2. If (-3+y) is positive, but (-9+y) is negative, what is one number that y could be?

3. If (-5+z) is positive, but (-6+z) is negative, what is one number that z could be?
Please help, this is so confusing!