(A) | -8 + 0 | = 8
| -8 | + | 0 | = 8
∴ 8 = 8
(B) | -4 + ( -9 ) | = 13
| -4 | + | -9 | = 13
∴ 13 = 13
(C) | 7 + 12 | = 19
| 7 | + | 12 | = 19
∴ 19 = 19
(D) | 6 + ( -2 ) | = 4
| 6 | + | -2 | = 8
∴ 4 < 8
1. 下列哪一組數能使|甲數+乙數|<|甲數|+|乙數|成立? (A)甲數=..-阿摩線上測驗