1. Oblicz 120% liczby  [latex]frac{[sqrt{2frac{1}{4}}cdot(1frac{1}{2})^{-1}+sqrt{2}](1-sqrt{2)} }{-2^{3}cdot 2^{-2}}[/latex]      

[latex]frac{(sqrt{frac{9}{4}}*frac{2}{3}+sqrt{2})(1-sqrt{2})}{-8*frac{1}{4}} = frac{(1+sqrt{2})(1-sqrt{2})}{-2} = frac{1-2}{-2} = frac{-1}{-2} = frac{1}{2}[/latex]   0,5 - 100% x - 120%   100x = 60 x = 0,6