SOLUTION: what does 1+1+1+1+1+1+1+1+1+1+1+1x0+1= is the answer 12 or 1. please help.

12 because you have to do the multiplication before you can add.

1+1+1+1+1+1+1+1+1+1+1+1x0+1=

So you replace the 1x0 by 0 and you have

1+1+1+1+1+1+1+1+1+1+1+0+1=

Now there are no multiplications left so you can add and get 12.

Edwin