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What value of 
z makes the equation below true?

9z-2=79
3
9
13
79

What value of z z makes the equation below true?\newline9z2=79 9 z-2=79 \newline33\newline99\newline1313\newline7979

Full solution

Q. What value of z z makes the equation below true?\newline9z2=79 9 z-2=79 \newline33\newline99\newline1313\newline7979
  1. Set up equation: Set up the equation that needs to be solved.\newlineThe equation given is 9z2=799z - 2 = 79. We need to find the value of zz that makes this equation true.
  2. Add to isolate: Add 22 to both sides of the equation to isolate the term with the variable zz. \newline9z2+2=79+29z - 2 + 2 = 79 + 2\newlineThis simplifies to:\newline9z=819z = 81
  3. Divide to solve: Divide both sides of the equation by 99 to solve for zz.\newline9z÷9=81÷99z \div 9 = 81 \div 9\newlineThis simplifies to:\newlinez=9z = 9