Question 1091464
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12.  -8 1/2 =  (-1)*((8*2)/2 + 1/2) = (-1)(17/2) = -17/2
13.   4 3/5 =  (4*5)/5 + 3/5 = 23/5
14.   56 1/3 = (56*3)/3 + 1/3 =  (you do the math for this one)

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Hope this helps!