Сравните дроби а)11/12 и 13/15 б)17/48 и 25/72

[latex]a) frac{11}{12} [/latex] и [latex]frac{13}{15} [/latex][latex]frac{11}{12} = frac{55}{60}  [/latex][latex]frac{13}{15} = frac{52}{60} [/latex][latex]frac{55}{60} extgreater frac{52}{60}[/latex] →[latex]frac{11}{12} extgreater frac{13}{15} [/latex]б) [latex] frac{17}{48} [/latex] и [latex] frac{25}{72} [/latex][latex] frac{17}{48} = frac{51}{144} [/latex][latex] frac{25}{72} = frac{50}{144} [/latex][latex] frac{51}{144} extgreater frac{50}{144} [/latex][latex] frac{17}{48} extgreater frac{25}{72} [/latex]