Respuesta:
5 + 2x = 5x - 7
2x -5x = -7 - 5
- 3x = - 12
x = 4
4..................................................
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Respuesta:
5 + 2x = 5x - 7
2x -5x = -7 - 5
- 3x = - 12
x = 4
4..................................................