Tentukan pengurangan 5a + 6b – 3c dari 4a – 7c – 6b!

4a – 7c – 6b – (5a + 6b – 3c)
= 4a – 7c – 6b – 5a – 6b + 3c
= -a – 12b – 4c

4a – 6b – 7c – 5a + 6b – 3c = 4a-5a -6b+6b -7c-3c = -1a -10c