Jawabanmu

2014-04-03T18:25:32+07:00
4x +10 - 15x +9 = 3x+7""""""-11x+19=3x+7"""""19-7=3x+11x"""12=14x"""x=0, 86
2014-04-03T18:25:57+07:00
2 (2x + 5) -3 (5x - 3) = 3x + 7
4x + 10 - 15x + 9 = 3x + 7
4x - 15x - 3x = 7 - 10 - 9
-14x = -12
x = -12 / -14
x = 6 / 7