Respuesta:
- 1
Explicación paso a paso:
x - 1 = 3x + 1
3x + 1 = x - 1
3x - x = - 1 - 1
2x = - 2
x = - 2 / 2
x = - 1
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Respuesta:
- 1
Explicación paso a paso:
x - 1 = 3x + 1
3x + 1 = x - 1
3x - x = - 1 - 1
2x = - 2
x = - 2 / 2
x = - 1