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What is the value of the expression below when z=4 ? 7z-4 Answer:

What is the value of the expression below when z=4 z=4 ?\newline7z−4 7 z-4 \newlineAnswer:

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Full solution

Q. What is the value of the expression below when z=4 z=4 ?\newline7z−4 7 z-4 \newlineAnswer:
  1. Identify Variable and Value: Identify the given variable and its value.\newlineWe are given that z=4z = 4.
  2. Substitute Value into Expression: Substitute the value of zz into the expression.\newlineThe expression is 7z−47z - 4, so we replace zz with 44: 7(4)−47(4) - 4.
  3. Perform Multiplication: Perform the multiplication part of the expression.\newlineCalculate 77 times 44, which equals 2828: 7(4)=287(4) = 28.
  4. Perform Subtraction: Perform the subtraction part of the expression.\newlineSubtract 44 from 2828, which equals 2424: 28−4=2428 - 4 = 24.

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