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14x - 7 - 9x + 11 = 2 (x + 11)
14x - 7 - 9x + 11 = 2x + 22
5x + 4 = 2x + 22
5x - 2x = 22 - 4
3x = 18
x = 18/3
x = 6
Solución :
x = 6