Respuesta :

MrYums

Answer:

9x-18

Step-by-step explanation:

Distribute the Negative Sign:

=12x−14−(3x+9)+−1(−4−1)

=12x+−14+−3x+−9+(−1)(−4)+(−1)(−1)

=12x+−14+−3x+−9+4+1

Combine Like Terms:

=12x+−14+−3x+−9+4+1

=(12x+−3x)+(−14+−9+4+1)

=9x+−18

Answer:

=9x−18