1/2(3/4n+ 9) and 2(12 + 8x) -3(4x -9) i need help with these two

2 answers:

7 0

1/2(3/4n+9)
4 7/8n

2(12+8x)-3(4x-9)
24+16x-12x-12
-12+4x

5 0

I dont know if this is right but the answer to 2(12+8x)-3(4x-9) might be 4x+51?

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