TO PILNE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!  ile to jest  jedna druga + jedna czwarta = trzy czwarte - jedna druga =  jedna cała i jedna druga + jedna czwarta= cztery całe i trzy czwarte - jedna druga =

1/2 + 1/4 = 2/4 + 1/4 = 3/4 3/4 - 1/2 = 3/4 - 2/4 = 1/4 1 i 1/2 + 1/4 = 3/2 + 1/4 = 6/4 + 1/4 = 7/4  = 1 i 3/4 4 i 3/4 - 1/2 =  19/4 - 1/2 = 19/4 - 2/4 = 17/4 = 4  i 1/4

[latex]frac{1}{2}+frac{1}{4}=frac{2}{4}+frac{1}{4}=frac{3}{4}\ \ frac{3}{4}-frac{1}{2}=frac{3}{4}-frac{2}{4}=frac{1}{2}\ \ 1frac{1}{2}+frac{1}{4}=frac{3}{2}+frac{1}{4}=frac{6}{4}+frac{1}{4}=frac{7}{4}=1frac{3}{4}\ \4frac{3}{4}-frac{1}{2}=4frac{3}{4}-frac{2}{4}=4frac{1}{4} [/latex]