Multiply the equation by h²-25.
1(h +5) + 2(h -5) = 16
3h -5 = 16 . . . . . . . . . . collect terms
3h = 21 . . . . . . . . . . . . add 5
h = 7 . . . . . . . . . . . . . . divide by 3
The solution is h = 7.
_____
Check
1/(7-5) + 2/(7+5) = 16/(7²-25)
1/2 + 2/12 = 16/24
3/6 + 1/6 = 4/6 . . . . . yes, the answer satisfies the equation.