5 1/4 - 4 3/4= 2/7 + 5/7 + 1 1/4= 4- 5/7= 4 - 3/4= Proszę o pomoc za właściwe rozwiązanie daje naj

5 1/4 - 4 3/4= [latex] frac{21}{4} [/latex] - [latex] frac{19}{4} [/latex] = [latex] frac{2}{4} [/latex] 2/7 + 5/7 + 1 1/4=  [latex] frac{7}{7} [/latex] + [latex] frac{5}{4} [/latex] = [latex] frac{28}{28} [/latex] +[latex] frac{14}{28} [/latex] = [latex] frac{42}{28} [/latex] = 1 [latex] frac{14}{28} [/latex] = 1[latex] frac{1}{2} [/latex] 4- 5/7= [latex] frac{28}{7} [/latex] - [latex] frac{5}{7} [/latex] = [latex] frac{23}{7} [/latex] = 3 [latex] frac{2}{7} [/latex] 4 - 3/4= [latex] frac{16}{4} [/latex] - [latex] frac{3}{4} [/latex] = [latex] frac{13}{4} [/latex] = 3 [latex] frac{1}{4} [/latex]

5 i 1/4 - 4 i 3/4 = 4 i 5/4 - 4 i 3/4 = 2/4= 1/2 2/7 + 5/7 + 1 i 1/4= 7/7 + 1 i 1/4= 1 + 1 i 1/4= 2 i 1/4 4 - 5/7 = 3 i 7/7 - 5/7 = 3 i 2/7 4 - 3/4= 3 i 4/4 - 3/4= 3 i 1/4