I have 3 problems I need help with. I am completely clueless but more than willing to learn. I also don't know how to insert some of the symbols so I wrote it out, I hope it's not to confusing

1. x(not equal to sign)0, then1-1

x

2. a(not equal to) 0, a(not equal to)1;ax-bthen b=

a-b

3. k=1mb(squared), then b=

2

Thank You !!

Edit: For some reason when I submitted the post some of the numbers that were supposed to go underneath the underline moved to the left.

1. x is supposed to go under 1-1

2. a-b is supposed to go under ax-b

3. 2 is supposed to under the 1 as to say half