25-4 1/16-(5,15-22,5)=25-4 1/16 + 17,35=25-4 1/16+17 7/20= 25 - 4 5/80 + 17 28/80= 38 23/80
25-4 1/16-(5,15-2*2,5)=25 - 4 1/16 - (5,15-5)= 25 - 4 1/16 - 0,15 = 25 - 4 1/16 - 3/20 = 25 - 4 5/80 - 12/80 = 6 64/80 = 6 4/5
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25-4 1/16-(5,15-22,5)=25-4 1/16 + 17,35=25-4 1/16+17 7/20= 25 - 4 5/80 + 17 28/80= 38 23/80
25-4 1/16-(5,15-2*2,5)=25 - 4 1/16 - (5,15-5)= 25 - 4 1/16 - 0,15 = 25 - 4 1/16 - 3/20 = 25 - 4 5/80 - 12/80 = 6 64/80 = 6 4/5