Find the constant coefficient when the polynomial 3(x - 4) - 2(x^2 - x + 7) - 5(x - 1) is simplified.
3(x - 4) - 2(x^2 - x + 7) - 5(x - 1)
The constant is 3(-4) - 2(7) - 5(-1) = -12 - 14 + 5 = -21
