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Prtmarguerite
@Prtmarguerite
May 2019
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Rendre ces fractions irréductibles 13/18 20/30 25/10 15/12
Merci
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Verified answer
Bonjour. 13/18 = irréductible car 13 et 18 n'ont aucun diviseur commun. 20/30 = ( 2 × 10 ) / ( 3 × 10 ) = 2/3
25/10 = ( 5 × 5 ) / ( 2 × 5 ) = 5/2
15/12 = ( 5 × 3 ) / ( 4 × 3 ) = 5/4
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marco31
Le premier est 13/18
marco31
Verified answer
Bonjour
13/18⇒déjà irreductible
20/30⇒(2×10)/(3×10)=2/3
25/10⇒(5×5)/(5×2)=5/2
15/12⇒(5×3)/(4×3)=5/4
0 votes
Thanks 0
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Verified answer
Bonjour. 13/18 = irréductible car 13 et 18 n'ont aucun diviseur commun. 20/30 = ( 2 × 10 ) / ( 3 × 10 ) = 2/325/10 = ( 5 × 5 ) / ( 2 × 5 ) = 5/2
15/12 = ( 5 × 3 ) / ( 4 × 3 ) = 5/4
Verified answer
Bonjour13/18⇒déjà irreductible
20/30⇒(2×10)/(3×10)=2/3
25/10⇒(5×5)/(5×2)=5/2
15/12⇒(5×3)/(4×3)=5/4