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Sagot :

(1/5 + 1/10 + 1/4) = 8/40 + 4/40 + 10/40 = 22/40 = 11/20

[tex]\frac{1}{5} +\frac{1}{10} +\frac{1}{4}[/tex]

[tex]\frac{4+2+5}{20}[/tex]

[tex]\frac{11}{20} = 0,55[/tex]

[tex]5,5*10^{-1}[/tex]

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