А) 1,662+(3,48+0,338)= 2+3.48=5.48 b) 17,347+4,846+1,154= 17.347+6=23.347 в) (12,487+26,789)-17,589=12.487+9.2=21.487 г) 15,41-2,93-0,07= 15.41-3=12.41