Answers:
1. (9x + 16 + 2) + 2x
= (9x + 18) + 2x
= 9x + 18 + 2x
= 11x + 18
2. 7 × 14 - 2(x + 4)
= 98 - 2x - 8
= 90 - 2x
3. x - 3 + 7(x + 3) - 3x - 12
= x - 3 + 7x + 21 - 3x - 12
= 5x + 6
i hope this helps! i can help to clarify anything here if you need me to
