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Calculati 1/7+1/7:1/2

Răspuns :

[tex] \frac{1}{7}+ \frac{1}{7}:\frac{1}{2}= \\ \\ \frac{1}{7}+ \frac{1}{7}\cdot\frac{2}{1}= \\ \\ \frac{1}{7}+ \frac{2}{7}=\frac{3}{7}[/tex]
1/7+1/7:1/2=1/7+1/7x2/1=1/7+2/7=3/7=0,(428571)