is the matrix game strictly determined for the following matrix?

65 8 7 4 5 6 8 4 3 2 1 9 5 6 4 2 1 6 5 1 5 1 3 2 3 5 multiply the third number in the first row by the seventh number in the third row. add this result to the fifth number in the second row. add to this total ten times the fourth number in the third row. subtract the eighth number in the first row from the result.

What is the value of m in the equation 1/2 m - 3/4n=16 when n=8

If you measured the width of a window in inches and then in feet with measurement would you have the greater number of units