2 310,8 33 = ( + 4) + (2 − 1) 33 = + 2 + 4 − 1 33 = 3 + 3 33 − 3 = 3 + 3 − 3 30 3 = 3 3 10 = → = 10 + 4 (10) + 4 = 14 2 − 1 (2 × 10) − 1 = 19 = 14 × 19 = 266