移項

1. Origins, structure, and basic meaning

• Structure: 移項 is read as いこう and is a noun and する verb for transposing a term to the other side of an equation.
• Basic usage: The term and destination appear in 定数項を右辺へ移項する, while the procedure appears in 符号を変えて移項する.

2. Common pitfalls and similar expressions

• Movement and equivalent transformation
  • It is not an arbitrary relocation; it represents applying equivalent operations so that the equation remains valid.
• Change of sign
  • A term moved across the equality sign appears with the corresponding operation changed, so its sign must be checked.