Question

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Va rog sa ma ajutati pentru urmatoarele fractii !!!

9 + 4/21 + 3 + 10/21 =

2/6 + 1/3 + 5/8 + 3/4 + 9/16 =

90/100 - 2/10 - 8/25 =

7 - 82/100 =

5/6 - 7/12 =

Answer 1

9 + 4 supra 21 + 3 + 10 supra 21 = 266 supra 21 = 38 supra 3
2 supra 6 + 1 supra 3 + 5 supra 8 + 3 supra 4 + 9 supra 16 = 125 supra 48 
90 supra 100 - 2 supra 10 - 8 supra 25 = 38 supra 100  = 19 supra 50
7 - 82 supra 100 = 618 supra 100 = 309 supra 50 
5 supra 6 - 7 supra 12 = 3 supra 12 = 1 supra 4

Answer 2

9+4/21+3+10/21=(189+4+63+10)/21=266/21=38/3
2/6+1/3+5/8+3/4+9/16=1/3+1/3+5/8+3/4+9/16=(16+16+30+36+27)/48=125/48
90/100-2/10-8/25=(90-20-32)/100=38/100=19/50
7-82/100=(700-82)/100=618/100=309/50
5/6-7/12=(10-7)/12=3/12=1/4