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Sagot :

Konrad509idn
a) [tex]\frac{7}{20}[/tex]
b) [tex]\frac{2+7}{20}=\frac{9}{20}[/tex]
c) [tex]0[/tex]
Hello ! 

a) [tex]7/20[/tex]

b) [tex]2/20 + 7/20 \\=(2+7)/20 \\ =9/20[/tex]

c) [tex] The answer is 0.[/tex]
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