Can you guys help me? (All of them please)

Answer:
12x+8
21y-3
15p+20r
6w-15y
100e+70g
6ab+15ac
6nr+nt
54ha+63hc
Step-by-step explanation:
You just multiply the outside number to the number on the inside. You will notice that we the letters, they go in order from outside letter etc. Hopefully this helps!