10x<40

Let's solve the inequalities one by one:

1. For \( 10x < 40 \):

   Divide both sides by 10:

   \[ x < 4 \]

2. For \( -10y < 40 \):

   Divide both sides by -10. Remember to flip the inequality sign when dividing by a negative number:

   \[ y > -4 \]

3. For \( 10z < -40 \):

   Divide both sides by 10:

   \[ z < -4 \]

Summary of the solutions:

• \( x < 4 \)
• \( y > -4 \)
• \( z < -4 \)

These represent the solution sets for each variable based on the given inequalities.