Ngasal?Reportt!!…….​

Penjelasan dengan langkah-langkah:

1. 5a – 5b – 3c + (-3)a + 2b – 6c

= 5a – 5b – 3c – 3a + 2b – 6c

= 5a – 3a – 5b + 2b – 3c – 6c

= 2a – 3b – 9c

2. 5x + 4y – 3z – (-6)x + 3y – 5z

= 5x + 4y – 3z + 6x + 3y – 5z

= 5x + 6x + 4y + 3y – 3z – 5z

= 11x + 7y – 8z

3. A – 3B

= 2x² + 3x – 3(3x – x²)

= 2x² + 3x – 9x – 3x²

= 2x² – 3x² + 3x – 9x

= -x² – 6x