Respuesta:
[tex]5 \times ((2 + 3) \times 3 + ( \frac{12}{6} - 1) )\\ 5 \times (5 \times 3 + ( \frac{12}{6} - 1)) \\ 5 \times (15 + ( \frac{12}{6} - 1) \\ 5 \times (15 + \frac{12 }{6} - 1)\\ 5 \times ( \frac{90 + 12 - 6}{6} ) \\ 5 \times ( \frac{96}{6} ) = \\ 5 \times 16 = 80[/tex]
espero ayudarte
