Question

A math class is having a discussion on how to determine if the expressions 4 x minus x + 5 and 8 minus 3 x minus 3 are equivalent using substitution. The class has suggested four different methods. Which describes the correct method?

Answer 1

The answer is:

B. Both expression should be evaluated with one value if the final values of the expressions are the same then the two expressions must be equivalent

Answer 2

Both expressions should be evaluated with one value. If the final values of the expressions are the same, then the two expressions must be equivalent.

Explanation: