To find the solution of the inequality, you need to isolate/get "x" by itself in the inequality:
[tex]-\frac{x}{5} <3[/tex] Multiply -5(the inverse of -1/5) on both sides to get rid of the fraction and get "x" by itself
[tex](-5)(-\frac{x}{5})<3(-5)[/tex] [when you multiply or divide a negative number in an inequality, you flip the sign (>/<)]
x > -15 This is your solution