Final answer:
To solve the inequality 8x - 15x s 14 correctly, divide both sides of the inequality by -7 and flip the inequality sign. The correct solution is x < -2.
Step-by-step explanation:
Your friend made an error in solving the inequality 8x - 15x s 14. Let's solve the inequality correctly:
8x - 15x > 14
-7x > 14
Divide both sides by -7, remembering to flip the inequality sign because we are dividing by a negative number:
x < -2
Therefore, the correct solution to the inequality is x is less than -2, not xs - 2 as your friend stated.