Jawapan

  • Pengguna Brainly
2016-01-17T12:44:37+08:00
- 12/18 x ( - 18/21 )
= 216 / 378
= 4/7
1 5 1
2016-01-18T17:44:41+08:00
= -12/18 × -18/21
= -12/-21
= 12/21
= 4/7