zad 6,7 daaaaaaaaaajjjjjjjjjjeeeeeeeeee. nnnnnnnnaaaaaaaaajjjjjjjjj

Zad 6. [latex] frac{5}{8} * 4= frac{5*4}{8} = frac{5}{2} =2 frac{1}{2} [/latex] [latex] frac{7}{10} * 5= frac{7 * 5}{10} = frac{7}{2} =3 frac{1}{2} [/latex] [latex]6 * frac{2}{15} = frac{6 *2}{15} = frac{2 *2}{5} = frac{4}{5} [/latex] [latex]10 * frac{3}{4} = frac{10 * 3}{4} = frac{5 *3}{2} = frac{15}{2} =7 frac{1}{2} [/latex] [latex]12 * frac{5}{8} = frac{12 * 5}{8}= frac{3 *5}{2}= frac{15}{2} =7 frac{1}{2} [/latex] Zad 7.  [latex]1 - frac{1}{9} = frac{9}{9} - frac{1}{9} = frac{8}{9} [/latex] [latex]6 * frac{3}{4} = frac{6 * 3}{4} = frac{3 * 3}{2} = frac{9}{2}= 4 frac{1}{2} [/latex] [latex]4 * frac{5}{6} = frac{4 * 5}{6} = frac{2 * 5}{3} = frac{10}{3} = 3 frac{1}{3} [/latex] [latex] frac{1}{2} * 9 = frac{1 * 9 }{2} = frac{9}{2} = 4 frac{1}{2} [/latex] [latex]3 frac{3}{4} + frac{3}{4} = 3 frac{6}{4} = 4 frac{2}{4} = 4 frac{1}{2} [/latex] [latex]5 * frac{2}{3} = frac{5 * 2}{3} = frac{10}{3} = 3 frac{1}{3} [/latex] [latex]8 * frac{2}{18} = frac{8 * 2}{18} = frac{4 * 2}{9} = frac{8}{9} [/latex] [latex]2 * frac{4}{9} = frac{2 * 4}{9} = frac{8}{9} [/latex] [latex]8 - 4 frac{2}{3} = 7 frac{3}{3} - 4 frac{2}{3} = 3 frac{1}{3} [/latex] [latex]5- 4 frac{1}{9} = 4 frac{9}{9} - 4frac{1}{9} = frac{8}{9} [/latex]

mam nadzieje ze pomoglam :)  tam jest w przykladzeie w nawiadsie 4x4+3=15 nie 18 :) pomyłka :)