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7 (3x + 2) - 5 (4x - 3) = 4 (x - 2)
21x + 14 - 20x + 15 = 4x - 8
21x - 20x + 14 + 15 = 4x - 8
x + 29 = 4x - 8
x - 4x = - 8 - 29
- 3x = - 37
x = - 37/-3
x = 37/3
Respuesta.
x = 37/3