please help me get the correct answer for 5 and 6

4. Represent the following decimal numbers in binary using 8-bit signed magnitude, one's complement, and two's complement. a) 60 b) 60 c) 20 d) 20 5. What decimal value does the 8 -bit binary number 10011110 have if: a) It is interpreted as an unsigned number? b) It is on a computer using signed-magnitude representation? c) It is on a computer using one's complement representation? d) It is on a computer using two's complement representation? 6. For an 8-bit system, subtract (53)10 from (82)10 using: a) Signed-magnitude b) One's complement c) Two's complement