2) -1
4) 1
6) 3
Пошаговое объяснение:
2) 2 1/4+(-5)+1,75 = 2 1/4 - 5 + 1 3/4 = -2 3/4 + 1 3/4 = -1
4) 7+ (-2 1/5) + (-3,8) = 7 - 2 1/5 - 3 4/5 = 4 4/5 - 3 4/5 = 1
6) 6 + (-4 1/2) + 1,5 = 6 - 4 1/2 + 1 1/2 = 1 1/2 + 1 1/2 = 3
2) -1
4) 1
6) 3
Пошаговое объяснение:
2) 2 1/4+(-5)+1,75 = 2 1/4 - 5 + 1 3/4 = -2 3/4 + 1 3/4 = -1
4) 7+ (-2 1/5) + (-3,8) = 7 - 2 1/5 - 3 4/5 = 4 4/5 - 3 4/5 = 1
6) 6 + (-4 1/2) + 1,5 = 6 - 4 1/2 + 1 1/2 = 1 1/2 + 1 1/2 = 3