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Primero:
3x18/9
*Sacamos novena de 18 con 9, nos dá:*
3 x 2 = 6
Segundo:
8/4 - 5
2 - 5 = -3
Unimos todo:
6 + (-3)
6 - 3
= 3
Respuesta = 3
3x2+8/-1
6-8
-2