A.(-2)+(-8)-(-4)-5+(-6)-7+8-(-1)
b. 2 2/3 + 4 1/2
b. 2 2/3 + 4 1/2
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-2-8+4-5-6-7+8+1
-2-8-5-6-7+4+8+1
-28+13
-15
En la segunda pregunta no entiendo si el 2 y el 4 estan multiplicando al 2/3 y 1/2 o te falto poner algun signo