Sia designs a board game in which a card is drawn on each turn. • A blue card means move forward 4 squares.
• A red card means move back 6 squares.

Liam suggests adding some other cards to Sia's game

Part A
Liam explains that drawing a yellow card is equivalent to drawing a blue card followed by a red card. How many spaces forward or backward does a player move after drawing a yellow card? Justify your answer.
Part B
How could Liam use red, blue, and yellow cards to describe each of the following motions? Write equations to support your answer.
• A green card means move forward 2 spaces.
• An orange card means move 8 spaces backward.
• A purple card means move forward 10 spaces.
please answer part B mainly