Problema Solution
Diego solved an equation by multiplying both sides of the equation by 6. Then he checked that 6 is the correct solution by substituting it back into the original equation. Which of the following gives the properties of equality that he used and their correct order?
Answer provided by our tutors
The description is ambiguous but one can argue that validating a correct answer occurs when a variable occurs in the denominator or an expression, as follows below:
