Revision history of "subtract, composition of add and negate" (Z17248)

ᱮᱴᱟᱜ ᱵᱟᱪᱷᱟᱣ: ᱱᱟᱣᱟ ᱵᱚᱫᱚᱞᱠᱚ ᱛᱩᱞᱟᱹᱣ ᱢᱮᱱᱠᱷᱟᱱ, ᱨᱮᱰᱤᱭᱳ ᱵᱟᱠᱥᱚᱨᱮ ᱪᱤᱱ ᱮᱢ ᱠᱟᱛᱮ ᱵᱚᱞᱚᱜ ᱥᱮ ᱞᱟᱛᱟᱨ ᱨᱮᱱᱟᱜ ᱵᱟᱴᱚᱱ ᱞᱤᱱᱢᱮ᱾
ᱩᱱᱩᱫᱩᱜ: (ᱱᱮᱛᱚᱜ) = ᱱᱮᱛᱟᱨ ᱥᱩᱫᱷᱨᱟᱹᱣ ᱥᱟᱶᱛᱮ ᱥᱚᱝ, (ᱞᱟᱦᱟ ᱛᱮᱱᱟᱜ) = ᱞᱟᱦᱟ ᱨᱮᱭᱟᱜ ᱱᱟᱣᱟ ᱥᱩᱫᱷᱨᱟᱹᱣ ᱥᱟᱶᱛᱮ ᱥᱚᱝ, ᱱᱟᱥᱮ = ᱦᱩᱰᱤᱧ ᱥᱟᱯᱲᱟᱣ ᱾