Odpowiedź :
Odpowiedź:
3/4 - 1/7 = 21/28 - 4/28 = 17/28
7/10 - 4/15 = 21/30 - 8/30 = 13/30
3/14 - 1/5 = 15/70 - 14/70 = 1/70
2 i 3/5 - 7/10 = 2 i 6/10 - 7/10 = 1 i 16/1 - 7/10 = 1 i 9/10
2 i 3/8 - 1 i 5/6 = 2 i 9/24 - 1 i 20/24 = 1 i 33/24 - 1 i 20/24 = 13/24
3 i 1/6 - 2 i 3/4 = 3 i 2/12 - 2 i 9/12 = 2 i 14/12 - 2 i 9/12 = 5/12
Odpowiedź:
[tex]\frac{3}{4}-\frac{1}{7}=\frac{21}{28}-\frac{4}{28}=\frac{17}{28}\\\\\frac{7}{10}-\frac{14}{15}=\frac{21}{30}-\frac{28}{30}=-\frac{7}{30}\\\\\frac{3}{14}-\frac{1}{5}=\frac{15}{70}-\frac{14}{70}=\frac{1}{70}\\\\2\frac{3}{5}-\frac{7}{10}=2\frac{6}{10}-\frac{7}{10}=1\frac{16}{10}-\frac{7}{10}=1\frac{9}{10}\\\\2\frac{3}{8}-1\frac{5}{6}=2\frac{9}{24}-1\frac{20}{24}=1\frac{33}{24}-1\frac{20}{24}=\frac{13}{24}[/tex]
[tex]3\frac{1}{6}-2\frac{3}{4}=3\frac{2}{12}-2\frac{9}{12}=2\frac{14}{12}-2\frac{9}{12}=\frac{5}{12}[/tex]