g) 2,0(1) +2,01(12) -1,2(102) = 199/9 + 2091/990 - 12090/99900 = 484330 + 77367 -4433/36630 = 557264/36630 ≈ 15,2133
g și h sunt aceleași
i) 1,1 +1,(1) -1,1(1) = 11/10 + 10/9 - 109/90 = 99+100-109/90 = 90/90 = 1
j) 1,2(3) +2,02(03) -3,1(012) = 111/90 + 20001/9900 - 30981/99900 = 451770 + 740037-113597 /366300 = 107821/366300 = 2,94352
k) 0,(3) *1,2:2,1(6) = 3/9 *12/10 : 195/90 = 3/9*5/6:195/90 = 6/5*10/65 = 6*2/65 = 12/65
