Respuesta :

[tex]4(5x - 6) - 4(2x + 1) =\\ 20x-24-8x-4=\\ 12x-28[/tex]
first distribute
a(b+c)=ab+ac

4(5x-6)=20x-24
-4(2x+1)=-8x-4

20x-24-8x-4=
20x-8x-24-4=
12x-28

C is answer