Try this one.
All the sums are ' 1 '.
[8/15] [ 1/15] [ 2/5 ]
[ 1/5 ] [ 1/3 ] [ 7/15 ]
[4/15] [ 3/5 ] [ 2/15 ].
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In an 8x8 magic square, the sum of each row, column, and diagonal is the same, known as the magic constant. For an n x n magic square, the magic constant can be calculated using the formula ( M = \frac{n(n^2 + 1)}{2} ). For an 8x8 magic square, this gives ( M = \frac{8(64 + 1)}{2} = 260 ). Therefore, the sum in the 1st row of an 8x8 magic square is 260.
Excluding reflections and rotations, there is only one 3x3 magic square using 1-9.
By using the quadratic equation formula
If you are using square roots, the simplest way of solving: ax2 + bx + c = 0 is x = [-b ± sqrt(b2-4ac)]/(2a)
76 percent of 600 using fractions will be 76 600