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zadanie w załączniku. klasa 8



Zadanie W Załączniku Klasa 8 class=

Odpowiedź :

Keitiperry444

[tex]\frac{1}{2} +\frac{1}{4} +\frac{1}{5} =\frac{10+5+4}{20} =\frac{19}{20}[/tex]

[tex]1 - \frac{19}{20}=\frac{20}{20}-\frac{19}{20}=\frac{1}{20}[/tex]

1. B

[tex]0,5=\frac{1}{2} =\frac{10}{20}[/tex]

[tex]\frac{10}{20} +\frac{19}{20} =\frac{29}{20}[/tex]

[tex]\frac{20}{20} - \frac{29}{20} =-\frac{9}{20}[/tex]

2. C

:)

Ladyn0ir

[tex] \frac{1}{2} + \frac{1}{4} + \frac{1}{5} = \frac{10}{20} + \frac{5}{20} + \frac{4}{5} = \frac{19}{20} [/tex]

[tex]1 = \frac{20}{20} [/tex]

[tex] \frac{20}{20} - \frac{19}{20 } = \frac{1}{20} [/tex]

czyli w pierwszym odp. B

[tex] \frac{19}{20} + \frac{1}{2} = \frac{19}{20} + \frac{10}{20} = \frac{29}{20} [/tex]

[tex] \frac{20}{20} - \frac{29}{20} = - \frac{9}{20} [/tex]

w drugim odp. C

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