Katherine Dunham was born on the 22nd of June 1909
The answer is C. Chin-Kee
Lets say the number = x
the equation is:
2/3 x - 6 = -10 (add 6 to each side)
2/3 x - 6 + 6 = -10 + 6
2/3 x = -4 (multiply each side by 2/3 's reciprocal or 3/2)

x =

x = -6
The number is -6