Final answer:
The error in the solution is described in statement a) - In step 5, the Multiplication Property of Equality was applied incorrectly.
Step-by-step explanation:
The error in the solution is described in statement a) - In step 5, the Multiplication Property of Equality was applied incorrectly. Multiplication or division by the same number on both sides of an equation does not change equality, but it should be applied correctly to each term in the equation. If the multiplication is not distributed correctly, the equation will be incorrect.