To solve this problem, you'll want to substitute the variables for the values you are given and follow the order of operations. Let's substitute first, shall we?
xz becomes 4 times 1. 4y becomes 4 times 2. 2z becomes 2 times 1. Now that we have everything substituted in, we have our new equation. 4*1(4*2 - 2*1) With the asterisks representing the multiplication sign. Now, solving those first easy problems as the first step, we get.. 4(8-2) Remember to follow order of operations! Do the problem in the parentheses first, 8-2. Now we have 4(6). Assuming the problem is exactly how you wrote it and you are supposed to multiply the two numbers, your answer is 24.
