- 48 : 3 (56 + 28) : 14 9・9-8・5 - 48) : 3 56 + 28 : 14 9・(9-8)・5

1) -48 : 3 = -16

2) (-48) : 3 = -16

3) (56 + 28) : 14 = 84 : 14 = 6

4) 56 + 28 : 14 = 56 + 2 = 58

5) 9 ⋅ 9 - 8 ⋅ 5 = 81 - 40 = 41

6) 9 ⋅ (9 - 8) ⋅ 5 = 9 ⋅ 1 ⋅ 5 = 45