8.2.4 ᠵᠣᠬᠢᠰᠲᠠᠢ ᠠᠷᠭᠠ ᠪᠠᠷ ᠬᠤᠶᠠᠷ ᠥᠯᠥ ᠮᠡᠳᠡᠭᠳᠡᠭᠴᠢᠳᠡᠢ ᠨᠢᠭᠡᠳᠤᠭᠡᠷ ᠵᠡᠷᠭᠡ ᠶᠢᠨ ᠲᠡᠭᠰᠢᠳᠭᠡᠯ ᠤᠨ ᠪᠥᠯᠥᠭ ᠢ ᠪᠣᠳᠣᠬᠤ
ᠳᠣᠯᠤᠳᠤᠭᠠᠷ ᠣᠨ(ᠳᠣᠣᠷᠠᠳᠤ ᠳᠡᠪᠲᠡᠷ ),ᠬᠠᠰᠪᠤᠶᠠᠨᠳᠤ,8.2.4 ᠬᠣᠶᠠᠷ ᠥᠯᠥ ᠮᠡᠳᠡᠭᠳᠡᠭᠴᠢᠳᠡᠢ ᠨᠢᠭᠡᠳᠤᠭᠡᠷ ᠵᠡᠷᠭᠡ ᠶᠢᠨ ᠲᠡᠭᠰᠢᠳᠭᠡᠯ ᠦᠨ ᠪᠥᠯᠥᠭ ᠢ ᠪᠣᠳᠣᠬᠤ ᠠᠷᠭᠠ,① 2𝑥−𝑦=3 𝑥+2𝑦=4,② 𝑥−𝑦=12 4𝑥+3𝑦=8,③ 𝑥+𝑦=2 5𝑥−2𝑦=7,ᠪᠣᠯᠪᠠᠰᠤᠷᠠᠯ ᠪᠠᠲᠤᠳᠬᠠᠯ,ᠳᠠᠷᠠᠭᠠᠬᠢ ᠲᠡᠭᠰᠢᠳᠭᠡᠯ ᠦᠨ ᠪᠥᠯᠥᠭ ᠢ ᠵᠣᠬᠢᠰᠲᠠᠢ ᠠᠷᠭᠠ ᠪᠠᠷ ᠪᠣᠳᠣ᠃,① 5𝑥+7𝑦=17 3𝑥+14𝑦=20,② 𝑥+2𝑦=5 4𝑥+3𝑦=10,ᠪᠣᠯᠪᠠᠰᠤᠷᠠᠯ ᠪᠠᠲᠤᠳᠬᠠᠯ,ᠳᠠᠷᠠᠭᠠᠬᠢ ᠲᠡᠭᠰᠢᠳᠭᠡᠯ ᠦᠨ ᠪᠥᠯᠥᠭ ᠢ ᠵᠣᠬᠢᠰᠲᠠᠢ ᠠᠷᠭᠠ ᠪᠠᠷ ᠪᠣᠳᠣ᠃,① 𝑥=4−2y 2𝑥+3𝑦=5,② 3𝑥−5y=7 4𝑥−3𝑦=2,ᠪᠣᠯᠪᠠᠰᠤᠷᠠᠯ ᠪᠠᠲᠤᠳᠬᠠᠯ,ᠳᠠᠷᠠᠭᠠᠬᠢ ᠲᠡᠭᠰᠢᠳᠭᠡᠯ ᠦᠨ ᠪᠥᠯᠥᠭ ᠢ ᠵᠣᠬᠢᠰᠲᠠᠢ ᠠᠷᠭᠠ ᠪᠠᠷ ᠪᠣᠳᠣ᠃,2𝑥−4𝑦=13 6𝑦+2𝑥=19,2𝑥−4𝑦=13 2𝑥+6𝑦=19,ᠰᠡᠳᠬᠢᠬᠦ,ᠪᠠᠭᠠ ᠬᠤᠪᠢᠷᠠᠯᠲᠠ ᠶᠡᠬᠡ ᠳᠠᠪᠰᠢᠯᠲᠠ ᠶᠢ ᠣᠯᠣᠨᠠ᠃,2 3 𝑥+ 5 9 𝑦=7,0.6𝑥−0.4𝑦=1.5,5 𝑥−3 5 𝑦=9,ᠰᠡᠳᠬᠢᠬᠦ,ᠵᠥᠪ ᠠᠷᠭᠠ ᠶᠢ ᠰᠤᠩᠭᠤᠬᠤ,,ᠬᠤᠷᠢᠶᠠᠩᠭᠤᠢᠯᠠᠯ,ᠥᠯᠥ ᠮᠡᠳᠡᠬᠦ ᠲᠣᠭᠠᠨ ᠤ ᠢᠯᠡᠳᠭᠡᠮᠵᠢ ᠨᠢ ᠪᠠᠭᠠ᠂ ᠢᠯᠡᠳᠭᠡᠮᠵᠢ ᠨᠢ 1 ᠪᠤᠶᠤ −1 ᠪᠣᠯᠬᠤ ᠲᠡᠭᠰᠢᠳᠭᠡᠯ ᠦᠨ ᠪᠥᠯᠥᠭ ᠢ ᠪᠣᠳᠣᠬᠤ ᠳᠤ ᠤᠷᠢᠳᠴᠢᠯᠠᠨ ᠣᠷᠣᠯᠠᠭᠤᠯᠤᠨ ᠤᠰᠠᠳᠬᠠᠬᠤ ᠠᠷᠭᠠ ᠶᠢ ᠰᠤᠩᠭᠤᠨᠠ᠃ ᠥᠯᠥ ᠮᠡᠳᠡᠬᠦ ᠲᠣᠭᠠᠨ ᠤ ᠢᠯᠡᠳᠭᠡᠮᠵᠢ ᠨᠢ ᠶᠡᠬᠡ᠂ ᠠᠳᠠᠯᠢ ᠥᠯᠥ ᠮᠡᠳᠡᠬᠦ ᠲᠣᠭᠠᠨ ᠤ ᠢᠯᠡᠳᠭᠡᠮᠵᠢ ᠨᠢ ᠬᠠᠷᠢᠯᠴᠠᠨ ᠡᠰᠡᠷᠬᠦ ᠲᠣᠭᠠ ᠪᠤᠶᠤ ᠲᠡᠩᠴᠡᠬᠦᠦ ᠪᠣᠯᠬᠤ ᠪᠤᠶᠤ ᠳᠠᠬᠢᠨ ᠲᠣᠭᠠᠨ ᠤ ᠬᠣᠯᠪᠣᠭᠳᠠᠯ ᠲᠠᠢ ᠦᠶᠡᠰ ᠤᠷᠢᠳᠴᠢᠯᠠᠨ ᠨᠡᠮᠡᠵᠤ ᠬᠠᠰᠤᠬᠤ ᠠᠷᠭᠠ ᠶᠢ ᠰᠤᠩᠭᠤᠨᠠ᠃,
ᠮᠣᠩᠭᠣᠯ ᠳ᠋ᠣᠺ ᠤᠨ ᠬᠥᠮᠥᠷᠭᠡ