sederhanakalah / hitunglah ?

1. =[tex] \frac{4 (p+2q)}{p+2q} = 4[/tex]


2. =[tex] \frac{3x(2x-3)}{2x-3} = 3x[/tex]


3. [tex] \frac{(x-4) (x+4)}{(x-7) (x-4)} = \frac{x+4}{x-7} [/tex]