Ответ:

1) -56

2) -60

3) 101

4) 100

5) 50

6) 50

Пошаговое объяснение:

1) -56+23+(-23) = -56+(23-23) = -56

2) -75+30+(-15) = -75+(30-15) = -75+15 = -(75-15) = -60

3) 52+(-22+71) = (52-22)+71 = 30+71 = 101

4) 81+(-31+50) = (81-31)+50 = 50+50 = 100

5) 46+(-20)+24 = (46+24)-20 = 70-20 = 50

6) 69+(-29)+10 = (69-29)+10 = 40+10 = 50