605. 1) 5,1(12) + 138
2) 2,3(72) - 110
3
) 4,23(6) + 29
110
300
4) 3,16(54) - 128
умоляю 10 ​

Объяснение:

1) 5,1(12) + 138=5,112121212+138=143,112121212=143,1(12)

2) 2,3(72) - 110=-(110- 2,3(72))=-(110,000-2,3(72))=-107,6(28)

3 ) 4,23(6) + 29110 300=29110 304,23(6)

4) 3,16(54) - 128=-(128-3,16(54))=-124,83(46)