Jawabanmu

2014-09-10T18:16:46+07:00
1. 42n + 20n + 35m - 50m + 7 - 9 = 62n - 15 - 2
2. 5x - x + 3 + 1 = 4x + 4
3. 2y - 4y + 15z + 8 = -2y + 15z + 8
1 5 1