differentiated equation solving - solving 1 step, 2 step, brackets challenge

High ability KS2, KS3, KS4 equation solving worksheet with space to write answers . I think I may have borrowed this resource from someone else years ago and adjusted to suit my groups so if it seems familiar that's why!
Section 1 - simple (undoing a multiply)
Section 2 - Simple (undoing a divide)
Section 3 - 2 step (undo the +/- first)
Section 4 - 2 step (but the unknown is on the right hand side of the =)
Section 5 - brackets involved
Challenge with brackets