2x-3y=-10x+2y=2Selesaikan dengan 4 metodemetode eliminasimetode subsitusimetode campuranmetode grafik
Answer (1)
Penjelasan dengan langkah-langkah:1. Metode Eliminasi2x - 3y = -10x + 2y = 2 → kalikan 2 jadi 2x + 4y = 4(2x + 4y) - (2x - 3y) = 4 - (-10)0x + 7y = 14 → y = 2Substitusi y = 2 ke x + 2y = 2 → x + 4 = 2 → x = -2Hasil: x = -2, y = 22. Metode Substitusix + 2y = 2 → x = 2 - 2ySubstitusi ke 2x - 3y = -10 → 2(2 - 2y) - 3y = -104 - 4y - 3y = -10 → 4 - 7y = -10 → -7y = -14 → y = 2x = 2 - 2(2) = -2Hasil: x = -2, y = 23. Metode CampuranDari x + 2y = 2 → x = 2 - 2ySubstitusi ke 2x - 3y = -10 → 2(2 - 2y) - 3y = -104 - 4y - 3y = -10 → -7y = -14 → y = 2, lalu x = -2Hasil: x = -2, y = 24. Metode Grafik2x - 3y = -10 → y = (2/3)x + 10/3x + 2y = 2 → y = (-1/2)x + 1Gambar kedua garis, titik potongnya di (-2, 2)Jawaban akhir: x = -2, y = 2
