Find the constant coefficient when the polynomial 3(x - 4) - 2(x^2 - x + 7) + 5(x - 1) + 3(x + 8) is simplified.
3(x−4)−2(x2−x+7)+5(x−1)+3(x+8)
(3x−12)−(2x2−2x−14)+(5x−5)+(3x+24)
3x−12−2x2+2x+14+5x−5+3x+24
−2x2+13x+21
constant term = 21
+1223 
