15.x-12
X+15
"< 0" For example x < 0 means "x less than zero".
X<a x>b
x is less than or equal to negative 3 or x< or =-3
15.x-12
X+15
x-15, x represents the unknown number, and to have 15 less you would simply subtract 15 from x.... therefore your answer is x-15
It is X <= 15.
"< 0" For example x < 0 means "x less than zero".
x - 4
X<a x>b
x is less than or equal to 15
x² - 15
x - 10
5-x
x is less than or equal to negative 3 or x< or =-3