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2014-09-08T19:21:01+02:00
3x/4 + 11 = 6x - 2/3
9x/12 + 132/12 = 72x/12 - 8/12
9x + 132 = 72x - 8
9x - 72x = - 8 - 132
- 63x = - 140
x = 140/63