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(2-1/2) :(9-8/12)=
1/2 : 1/12 =
1/2 * 12/1 = 6 (divides 12:2=6 y 2:2=1)
b) raiz cuadrada de 1 - 3/2 : 2 + 2/9 =
raiz cuadrada de 1 - 3/2 * 1/2 + 2/9 =
raiz cuadrada de 1 - 3/4 + 2/9 =
raiz cuadrada de 4-3/4 + 2/9 =
raiz cuadrada de 1/4 + 2/9 =
5/10 + 2/9 =
45 + 20/90 = 65/90 = 13/18 simplificas(65:5=13 y 90:5=18
c) (2/3 - 3/4) : (1 - 1/2) =
(8 - 9/12) : (2 - 1/2) =
-1/12 : 1/2 =
-1/12 * 2/1 = -1/6 (simplificas 12:2=6 y 2:2=1)