Oblicz: 4* frac{1}{2} +5 : 1-3* frac{1}{5} pisemnie frac{7}{2 sqrt{3} } ile to jest rozpisać

[latex] ot4^2* dfrac{1}{ ot2^1} +5 : 1-3* dfrac{1}{5} =2+5-dfrac{3}{5}=7-dfrac{3}{5}=6dfrac{5}{5}-dfrac{3}{5}=oxed{5dfrac{2}{5}}[/latex] [latex]dfrac{7}{2 sqrt{3} } =dfrac{7}{2 sqrt{3} } *dfrac{sqrt{3}}{ sqrt{3} } =dfrac{7sqrt{3}}{2*(sqrt{3})^2}=dfrac{7sqrt{3}}{2*3}=dfrac{7sqrt{3}}{6}=oxed{dfrac{7}{6}sqrt{3}}[/latex]