PROCEDIMIENTO:
[tex]\:3-9\left\{8+7\left[2+4\left(5-6\cdot 5\right)\right]\right\}3-9[/tex] Multiplicar "6 * 5"
[tex]3-9\left\{8+7\left[2+4\left(5-30\right)\right]\right\}3-9[/tex] Calcular la diferencia "5 - 30"
[tex]3-9\left\{8+7\left[2+4\cdot \left(-25\right)\right]\right\}3-9[/tex] Multiplicar "+4 * (-25)"
[tex]3-9\left\{8+7\left(2-100\right)\right\}3-9[/tex] Calcular la diferencia "2 - 100"
[tex]3-9\left[8+7\cdot \left(-98\right)\right]3-9[/tex] Multiplicar "+7 * (-98)"
[tex]3-9\left(8-686\right)\cdot 3-9[/tex] Calcular la diferencia "8 - 686"
[tex]3-9\cdot \left(-678\right)\cdot 3-9[/tex] Calcular el producto "-9 * (-678) * 3"
[tex]3+18306-9[/tex] Sumar y restar
[tex]18300[/tex] Resultado
Atte: Sabius95
