Срочноо по действиям отмечаные номера пж

а)1)(6[latex] \frac{1}{7} [/latex]-5[latex] \frac{3}{4} [/latex])=[latex] \frac{43}{7} [/latex]-[latex] \frac{23}{4} [/latex]=[latex] \frac{172}{28} [/latex]-[latex] \frac{161}{28} } [/latex]=[latex] \frac{11}{28} [/latex] 2)3[latex] \frac{3}{4} [/latex]-1[latex] \frac{5}{6} [/latex]=[latex] \frac{15}{4} [/latex]-[latex] \frac{11}{6} [/latex]=[latex] \frac{45}{12} [/latex]-[latex] \frac{22}{12} [/latex]=[latex] \frac{23}{12} [/latex] 3)[latex] \frac{11}{28} [/latex]:[latex]\frac{11}{14}[/latex]=[latex] \frac{11}{28} [/latex]*[latex] \frac{14}{11} [/latex]=[latex] \frac{1}{2} [/latex] 4)[latex] \frac{23}{12} [/latex]:[latex] \frac{1}{6} [/latex]=[latex] \frac{23}{12} [/latex]*[latex] \frac{6}{1} [/latex]=[latex] \frac{23}{2} [/latex] 5)[latex] \frac{1}{2} [/latex]+[latex] \frac{23}{2} [/latex]=[latex] \frac{24}{2} [/latex]=12 б)5[latex] \frac{4}{19} [/latex]*3[latex] \frac{4}{7} [/latex]=[latex] \frac{99}{19} [/latex]*[latex] \frac{25}{7} [/latex]=