Odpowiedź:
[tex]\frac{1}{a} =-1\frac{3}{7}[/tex]
Szczegółowe wyjaśnienie:
[tex]a=|2\frac{1}{2} | -1,4*|-2\frac{2}{7} |[/tex]
[tex]a=2\frac{1}{2} -1,4*2\frac{2}{7}[/tex]
[tex]a=2\frac{1}{2} -\frac{14}{10} *\frac{16}{7}[/tex]
[tex]a=2\frac{1}{2} -\frac{32}{10}[/tex]
[tex]a=2\frac{1}{2} -3\frac{2}{10}[/tex]
[tex]a=-\frac{7}{10}[/tex]
odwrotność liczby a to [tex]\frac{1}{a}[/tex]
[tex]\frac{1}{a} =\frac{1}{-\frac{7}{10}}=1*(-\frac{10}{7})=-\frac{10}{7}=-1\frac{3}{7}[/tex]
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Odpowiedź:
[tex]\frac{1}{a} =-1\frac{3}{7}[/tex]
Szczegółowe wyjaśnienie:
[tex]a=|2\frac{1}{2} | -1,4*|-2\frac{2}{7} |[/tex]
[tex]a=2\frac{1}{2} -1,4*2\frac{2}{7}[/tex]
[tex]a=2\frac{1}{2} -\frac{14}{10} *\frac{16}{7}[/tex]
[tex]a=2\frac{1}{2} -\frac{32}{10}[/tex]
[tex]a=2\frac{1}{2} -3\frac{2}{10}[/tex]
[tex]a=-\frac{7}{10}[/tex]
odwrotność liczby a to [tex]\frac{1}{a}[/tex]
[tex]\frac{1}{a} =\frac{1}{-\frac{7}{10}}=1*(-\frac{10}{7})=-\frac{10}{7}=-1\frac{3}{7}[/tex]