Hey there!
Firstly, you need combine your like terms

stays the SAME 

- Combine the negative and the plus and make a negative symbol

Good luck on your assignment and enjoy your day!
~
Answer:
Step-by-step explanation:
9
We have the equation:

Fist we add the b on the right side of the equation.

For the second step we multiply d to the right side of the equation
Answer:
(3x − 1)(x 8)
Step-by-step explanation: