binary to decimal confusion!!! signed numbers! OKay this makes no sense to me... THe directions say: The following binary numbers have a sign in the leftmost postion and if negative, are in 2's complement form. Perofrm the indciated airthmeic operations and verify the answers. So i have: 110001 -010010 = ? 010010 = 18, but since we are subtracting its -18. 1 10001 is in two's compliment form so we have to convert it to its regular magnitude by taking 2's compliment of it. which is 001110 + 1 = 001111 = 15, but since the sign is a 1 above, its -15; so we got -15 - 18 = -33 So we know the answer has to be -33; but when u take the 2's compliment of the minuend, u end up with 010010 = 101101 + 1 = 101110; so now we add that to the top number: 110001 +101110 = 1 011111; we have an overflow of 1, so u delete that and ur left with 011111 = 31!! what the heck is going on!