1/8(16Ꮇ - 8) - 17 ᏚᏆᎷᏢᏞᏆFᏆᎬᎠ ᏆᏚ _ ᏚᎻᎾᏔ YᎾᏌᎡ ᏔᎾᎡK
1/8(16M-8)-17 *1/8 distribute by 1/8___________2M-1-17 simplify2M-18
