Respuesta:
4 + 7 - 18 : (-6) + (--72) : 12
[tex]=4+7-18\div \left(-6\right)+72\div \:12\\\\=4+7-\left(-3\right)+72\div \:12\\\\=4+7-\left(-3\right)+6\\\\=20[/tex]
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Respuesta:
4 + 7 - 18 : (-6) + (--72) : 12
[tex]=4+7-18\div \left(-6\right)+72\div \:12\\\\=4+7-\left(-3\right)+72\div \:12\\\\=4+7-\left(-3\right)+6\\\\=20[/tex]