please help me solve this question and show your work. circle the answers for me. Thank you

6. Assuming 8-bit two's complement numbers, subtract the following using two's complement arithmetic: (3 points) a) 11000100 -001 1 1 0 1 1 b) 0 1 0 1 1 0 1 1 -0001 1 1 1 1 c) 10101100 -00100100 7. Perform the following binary multiplications using Booth's algorithm, assuming two's complement numbers: (3 points) a) b) c) 1011 x 0101 0011 x 1011 1011 x 1100