Find all real numbers a that satisfy 1/(a^3 + 7) - 7 = -a^3/(a^3 + 7) + 6.
a^3 = x
1/(x+7) - 7 =- x/(x+7) + 6
(1 + x)/(x + 7) = 13
1 + x = 13x + 91
-90 = 12x
x = -15/2
=^._.^=
