1) $$2,46 : 4,1 + (15 : 0,25) - (4:25 - 14,4 : 0,32) = 0.6 + 60 - (0.16 - 45) = 0.6 + 60 - (-44.84) = 60.6 + 44.84 = 105.44$$
2) $$50 - (2,3256 : 0,068 + 9,38) = 50 - (34.2 + 9.38) = 50 - 43.58 = 6.42$$
3) $$6,63 : 0,85 - (34 - 30,9248): 0,62 = 7.8 - (3.0752 : 0.62) = 7.8 - 4.96 = 2.84$$
Ответ:
1) 105.44
2) 6.42
3) 2.84