zadanie 5 prosze o Pomoc daje najj prosze .....

a) [latex]2 frac{1}{5}*10+1 frac{3}{4}= frac{11}{5}*10+1 frac{3}{4}= 22+1 frac{3}{4}= 23 frac{3}{4} [/latex] [latex] frac{2}{3}*1 frac{4}{5}+2 frac{1}{2}= frac{2}{3}* frac{9}{5} +2 frac{1}{2}= 1frac{1}{5} +2 frac{1}{2}=1 frac{2}{10}+2 frac{5}{10}=3 frac{7}{10} [/latex] b)[latex]3 frac{3}{4} +2 frac{2}{3}*2 frac{1}{4}= 3 frac{3}{4}+ frac{8}{3} * frac{9}{4}=3 frac{3}{4}+6=9 frac{3}{4} [/latex] [latex][(1 frac{1}{2})^{2} +1 frac{1}{6}]*3= [(frac{3}{2})^{2} +1 frac{1}{6}]*3= [frac{9}{4} +1 frac{1}{6}]*3= [frac{27}{12} +1 frac{2}{12}]*3=1 frac{29}{12} *3= frac{41}{12}*3= frac{41}{4} =10 frac{1}{4} [/latex] c)[latex]2 frac{2}{5} *1 frac{2}{3} -1 frac{5}{6}= frac{12}{5} * frac{5}{3} -1 frac{5}{6}=4-1 frac{5}{6}=2 frac{1}{6} [/latex] [latex]4 frac{7}{8}-1 frac{1}{3} *1 frac{1}{8} = 4 frac{7}{8}- frac{4}{3}* frac{9}{8}= 4 frac{7}{8}- frac{3}{2}= 4 frac{7}{8}- frac{12}{8}= 4 frac{7}{8}- 1 frac{4}{8}=3 frac{3}{8} [/latex]