Samdráttur – Æfing 2 – Dragið saman

  1. a – b + (3b – 2a) + 4a + (a – b)
  2. a – (b + 3b) -2a – (4a + a – b)
  3. 2x + 9y + 14z – 22x – 34y + 15 x – 41y + 3z
  4. 4p -3p2q·(-2 +7) + pq(-4-5) + (21 – 9) – 11p3q
  5. 4a – (2b – d) – (3a – 2b – (4c – d) + 3c)
  6. 5a – (5x + (2x – k) – 4k + (a – (2x -2k)+x))