Please help me with my work please help me please give me the answers

Answer:
3. is 8 x h + 8 x 3 = 8h + 24
4. is 3 x 2h + 3 x 7 = 6h + 21
5. is 5 x 3x + 5 x 9y = 15x + 45y
6. is 4 x 11h + 4 x 3g = 44h + 12g
8. is a x 9b + a x 13 = 9ba + 13a
I dont really know 7