To move (a term) from one side of an algebraic equation to the other side by addition or subtraction which causes its sign to change.
terms are separated by + and - signs.
Example: solve 2x+3=9 2x+3-3=9-3 (subtract 3 from both sides) 2x=9-3 (the 3 has been TRANSPOSED to the RHS) 2x=6 x=3
