Solve for p: 5(p - 3) - 4p = -10.

1. Distribute on the left: 5p - 15 - 4p = -10. 2. Combine like terms: 5p - 4p = p, so p - 15 = -10. 3. Add 15 to both sides: p = 5. 4. Check: 5(5 - 3) - 4(5) = 10 - 20 = -10, a true statement. 5. p = -25 is the trap of adding -10 and -15 instead of adding 15 to both sides. _Source: OpenStax Elementary Algebra (CC BY 4.0), Ch 2 "Solving Linear Equations and Inequalities", section 2.1 Solve Equations Using the Subtraction and Addition Properties of Equality_