EVALUATE 3x + 2y - 2z WHEN x=5, y=2, AND z=1 ???
21
Please try again, noting the signs.
17
3x + 2y - 2z
(3 * 5) + (2 * 2) - (2)
15 + 4 - 2 = ?
To evaluate the expression 3x + 2y - 2z when x = 5, y = 2, and z = 1, you need to substitute the given values into the expression and perform the necessary calculations.
Here's how you can solve it step by step:
Step 1: Replace x with 5, y with 2, and z with 1 in the expression:
3(5) + 2(2) - 2(1)
Step 2: Simplify the multiplication:
15 + 4 - 2
Step 3: Perform the addition and subtraction:
19 - 2
Step 4: Finally, calculate the result:
17
Therefore, the value of the expression 3x + 2y - 2z when x = 5, y = 2, and z = 1 is 17.