Выполните сложение: а)3 4/5+1 4/5 б)1 4/9+7 7/18 в)8 4/5+2 1/3 г)12 5/6+4/15 д)7/20+2 7/10 е)8 3/7+1 9/14 Пожалуйста!!!Помогите!Очень срочно!

а) 3 [latex] \frac{4}{5} [/latex] +1[latex] \frac{4}{5} [/latex] = [latex] \frac{19}{5} [/latex] + [latex] \frac{9}{5} [/latex] =  [latex] \frac{28}{5} [/latex] =  5[latex] \frac{3}{5} [/latex] б) 1[latex] \frac{4}{9} [/latex] +7 [latex] \frac{7}{18} [/latex]  =  [latex] \frac{13}{9} [/latex] +  [latex] \frac{133}{18} [/latex] =  [latex] \frac{26}{18} [/latex] +  [latex] \frac{133}{18} [/latex] =  [latex] \frac{159}{18} [/latex] = 8 [latex] \frac{15}{18} [/latex] = 8 [latex] \frac{5}{6} [/latex]  в) 8[latex] \frac{4}{5} [/latex] +2[latex] \frac{1}{3} [/latex]  = [latex] \frac{44}{5} [/latex]  + [latex] \frac{7}{3} [/latex] =  [latex] \frac{132}{15} [/latex]  + [latex] \frac{35}{15} [/latex] =  [latex] \frac{167}{15} [/latex] = 11 [latex] \frac{2}{15} [/latex]  г) 12[latex] \frac{5}{6} [/latex] +[latex] \frac{4}{15} [/latex]  = [latex] \frac{77}{6} [/latex]  + [latex] \frac{4}{15} [/latex] =  [latex] \frac{385}{30} [/latex]  + [latex] \frac{8}{30} [/latex] =  [latex] \frac{393}{30} [/latex] = 13 [latex] \frac{3}{30} [/latex] = 13,1 д)  [latex] \frac{7}{20} [/latex] +2  [latex] \frac{7}{10} [/latex] =  [latex] \frac{7}{20} [/latex]  + [latex] \frac{27}{10} [/latex] =  [latex] \frac{7}{20} [/latex]  + [latex] \frac{54}{20} [/latex] =  [latex] \frac{61}{20} [/latex] = 3 [latex] \frac{1}{20} [/latex]  е) 8  [latex] \frac{3}{7} [/latex]  + 1  [latex] \frac{9}{14} [/latex]  =  [latex] \frac{8*7+3}{7} [/latex] +   [latex] \frac{23}{14} [/latex] =  [latex] \frac{59}{7} [/latex] +   [latex] \frac{23}{14} [/latex] =  [latex] \frac{59 *2}{7*2} [/latex] +   [latex] \frac{23}{14} [/latex] =   [latex] \frac{118+23}{14} [/latex] = [latex] \frac{141}{14} [/latex] = 10[latex] \frac{1}{14} [/latex]