7z - z
What is 6z?
6z
The expression you provided "7z - z" appears to be a simple subtraction problem. To find the value of this expression, you need to subtract the value of 'z' from '7z'. However, since there is no specific numerical value assigned to 'z', we cannot calculate the exact result.
In math, 'z' is typically used to represent an unknown or variable value. So without knowing the value of 'z', we cannot simplify the expression any further.