Answer :
2 (4 + 9w) Original Problem.
2 * 4 + 2 * 18w Distribute.
8 + 2 * 18w Multiplied.
8 + 36w Multiplied.
Answer: 8 + 36w
2 * 4 + 2 * 18w Distribute.
8 + 2 * 18w Multiplied.
8 + 36w Multiplied.
Answer: 8 + 36w