If the solution of equation 5 (A-1) = 3A + X-11 is nonnegative, then the value range of a is?

If the solution of equation 5 (A-1) = 3A + X-11 is nonnegative, then the value range of a is?

If x is expressed by a, x = 2A + 6 and x > = 0, then 2A + 6 > = 0, so a > = - 3