Respuesta :


[tex]12 + 3(4f - 4) \\ 12 + 12f - 12 \\ = 12f[/tex]
Use the distributive property and combine like terms.
4f-4=4×(f-1)
12+12×(f-1)
pull out 12
12x (1-(-1)*(f-1)=
12f