Dibantu ya plis 🙂 tolong jangan asal
Jawab:
Penjelasan dengan langkah-langkah:
1. 4x + 3y – 6z + 8x + y – z
= 4x + 8x + 3y + y – 6z – z
= (4+8) x + (3+1) y – (6+1) z
= 12x + 4y – 7z
2. (10×2 – y + 7) – (7×2 – 3y + 6)
= 10×2 – 7×2 – y – 3y + 7 + 6
= (10-7)x2 – (1+3) y + (7+6)
= 3×2 – 4y + 13