1. The problem statement, all variables and given/known data Convert the logic circuit to an equivalent circuit constructed from 2-input NAND gates and NOT gates. http://imgur.com/EzOBdbv 2. Relevant equations Pretty sure the boolean equation is: A & (~(~B+C)+~D + E) 3. The attempt at a solution I know for sure that ~A + ~B = ~AB so I was trying to add an inverter to the input of each OR gate to try to make use of this equation but I get stuck at the spot where I need to convert a 3-input OR gate to a two input NAND gate. Can anyone please help?