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El número es = s
Resolvemos:
- 105/s = - 7
- 105 = s (-7)
- 105 = - 7s
- 105/-7 = s
15 = s
Respuesta.
Hay que dividir por 15
- 105/x = - 7
- 105 = (-7) x
- 105 = - 7x
- 105/-7 = x
15 = x
Se divide entre 15.