Prosiłbym o pomoc PILNE !! Daje naj ! Rozwiąze ktoś ?

[latex]a) 10 frac{m}{s}* frac{1km}{1000m}* frac{3600s}{1h}= \ \ 10 frac{ ot m}{ ot s}* frac{1km}{1000 ot m}* frac{3600 ot s}{1h}= \ \ frac{10*3600km}{1000h}= frac{36000km}{1000h}= 36 frac{km}{h}\ \ \  5 frac{m}{min}* frac{1km}{1000m}* frac{60min}{1h}= \ \ 5 frac{ ot m}{ ot min}* frac{1km}{1000 ot m}* frac{60 ot min}{1h}= \ \ frac{5*60km}{1000h}= frac{300km}{1000h}= 0,3 frac{km}{h}\ [/latex] [latex]b) 72 frac{km}{h}* frac{1000m}{1km}* frac{1h}{3600s}= \ \ 72 frac{ ot km}{ ot h}* frac{1000m}{ ot km}* frac{1 ot h}{3600s}= \ \ frac{72*1000m}{3600s}= frac{72000m}{3600s}= 20 frac{m}{s}\ \ \ 60frac{m}{min}* frac{1km}{1000m}* frac{60min}{1h}= \ \ 60frac{ ot m}{ ot min}* frac{1km}{1000 ot m}* frac{60 ot min}{1h}= \ \ frac{60*60km}{1000h}= frac{3600km}{1000h}= 36 frac{km}{h}[/latex] pozdrowieniaaaa!!!!