Respuesta:
9
Explicación paso a paso:
9x-6x-30=-3
9x-6x=-3 +30
3x=27
x=27/3
x=9
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Respuesta:
9
Explicación paso a paso:
9x-6x-30=-3
9x-6x=-3 +30
3x=27
x=27/3
x=9