3(5x-4y+2) – 4(-7x+5y-8)
Jawaban Terkonfirmasi
3(5x - 4y + 2) – 4(-7x + 5y - 8) = 15x – 12y + 6 + 28x – 20y + 32
= 15x + 28x – 12y – 20y + 6 + 32
= 43x – 32y + 38