13 - 9m < 58

To solve for `m`, we need to isolate `m` on one side of the inequality. We can start by subtracting 13 from both sides of the inequality. This gives:

-9m < 45

Next, we divide both sides of the inequality by -9. Since we are dividing by a negative number, we need to flip the inequality symbol. This gives:

m > -5

Therefore, the solution to the inequality 13 - 9m < 58 is m > -5.