It really depends, electricity has been around since the Pharaohs. Granted, they didn't know what they were doing with it probably, but it was still there. Could be feasible that some sort of basic computer was run on a rudimentary electrical source. We just haven't found evidence to prove it totally true....yet :)
Solve for "i"9x-7i > 3(3x-7)
Solve for "x"x+1=yx=2-1Omg so hard can you do it???
3+7i=what? I don't know what it is!
Okay...that was not required to say! But what is x+x=x? Solve that! Good Luck! That is VERY HARD!
Yes! That was easy! How about this one? x+x=y! Solve that one! That could be anything, so here.x+x=yy=5What are all the numbers X could be?