Odpowiedź :
a)
[tex] \frac{1}{2} + \frac{1}{2} \times \frac{1}{2} = \frac{1}{2} + \frac{1}{4} = \frac{2}{4} + \frac{1}{4} = \frac{3}{4} [/tex]
b)
[tex] \frac{1}{3} - \frac{1}{3} + \frac{1}{3} = \frac{1}{3} [/tex]
c)
[tex]( \frac{1}{4} + \frac{1}{4} ) \div \frac{1}{4} = \frac{2}{4} \div \frac{1}{4} = \frac{2}{4} \times \frac{4}{1} = \frac{2}{1} \times \frac{1}{1} = 2[/tex]
d)
[tex] \frac{1}{5} \div \frac{1}{5} - \frac{1}{5} = \frac{1}{5} \times \frac{5}{1} - \frac{1}{5} = 1 - \frac{1}{5} = \frac{4}{5} [/tex]
e)
[tex] \frac{1}{6} - \frac{1}{6} \times \frac{1}{6} = \frac{1}{6} - \frac{1}{36} = \frac{6}{36} - \frac{1}{36} = \frac{5}{36} [/tex]
f)
[tex] \frac{1}{7} \times ( \frac{1}{7} + \frac{1}{7} ) = \frac{1}{7} \times \frac{2}{7} = \frac{2}{49} [/tex]
Odpowiedź:
1/2 + 1/2 * 1/2 = 1/2 + 1/4 = 2/4 + 1/4 = 3/4
1/3 - 1/3 + 1/3 = 0 + 1/3 = 1/3
(1/4 + 1/4) : 1/4 = 2/4 : 1/4 = 2/4 * 4/1 = 2
1/5 : 1/5 - 1/5 = 1/5 * 5/1 - 1/5 = 1 - 1/5 = 5/5 - 1/5 = 4/5
1/6 - 1/6 * 1/6 = 1/6 - 1/36 = 6/36 - 1/36 = 5/36
1/7 * (1/7 + 1/7) = 1/7 * 2/7 = 2/49
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