proszę o pomoc zadanie 3 na samym dole a b i  c  proszę o szybką pomoc :D 

[latex]a) frac{2frac34:frac17-22}{6-(-5)} + frac34 = frac{frac{11}4*7-22}{6+5}+frac34 = frac{frac{77}4-22}{11}+frac34 = frac{frac{77}4-frac{88}4}{11}+frac34 = frac{-frac{11}4}{11}+frac34 =\\-frac{11}4*frac1{11}+frac34 = -frac14+frac34 = frac24 = frac12\\[/latex] [latex]b) frac{frac{6}{11}-frac{15}{45}}{frac{11}3-2frac12}*2frac34 = frac{frac{6}{11}-frac{1}{3}}{frac{22}6-frac{5}{2}}*frac{11}4 = frac{frac{18}{33}-frac{11}{33}}{frac{22}6-frac{15}6}*frac{11}4 = frac{frac{7}{33}}{frac{7}{6}}*frac{11}4 = frac7{33}*frac67*frac{11}4 = frac12 [/latex] [latex]c) 2-frac{8-frac12}{12+frac12} = 2-frac{frac{16}2-frac12}{frac{24}2+frac12} = 2-frac{frac{15}2}{frac{25}{2}} = 2-frac{15}2*frac2{25} = 2-frac35 = 1frac25[/latex]

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