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

ꠔꠚꠣꠕ ꠛꠣꠌꠂꠘ ꠪ ꠔꠥꠟꠘꠣ ꠇꠞꠣꠞ ꠟꠣꠉꠤ ꠡꠋꠡꠧꠗꠘꠞ ꠞꠦꠒꠤꠅ ꠛꠧꠔꠣꠝꠣꠁꠘ ꠌꠤꠢ꠆ꠘꠤꠔ ꠇꠞꠂꠘ ꠀꠞ ꠄꠘ꠆ꠐꠣꠞ ꠘꠣꠄ ꠔꠟꠞ ꠛꠧꠔꠣꠝꠅ ꠏꠣꠔꠣ ꠝꠣꠞꠂꠘ ⁕
ꠇꠤꠋꠛꠖꠘ꠆ꠔꠤ: (ꠄꠛꠟꠣꠇꠥꠞ) = ꠢꠇꠟꠞ ꠡꠦꠡ ꠡꠋꠡꠧꠗꠘꠞ ꠟꠉꠦ ꠔꠚꠣꠕ ꠨ (ꠀꠉꠞ) = ꠀꠉꠞꠛꠣꠞꠞ ꠡꠋꠡꠧꠗꠘꠞ ꠟꠉꠦ ꠔꠚꠣꠕ ꠨ { {int:minoreditletter}} = ꠢꠥꠞꠥꠝꠥꠞꠥ ꠡꠝ꠆ꠙꠣꠖꠘꠣ ⁕