Final answer:
The value of the expression 5y - 5z when y = 3 and z = 2 is 5.
Step-by-step explanation:
Simplifying expressions involves manipulating mathematical expressions to make them clearer or more manageable. The specific methods you use depend on the type of expression you're dealing with.
To find the value of the expression 5y - 5z when y = 3 and z = 2, substitute the given values into the expression.
Therefore, the value of the expression 5y - 5z when y = 3 and z = 2 is 5(3) - 5(2) = 15 - 10 = 5.
Hence, the correct answer is (a) 5.