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ItsHomeworks
@ItsHomeworks
January 2021
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Coucouuuuu tout le monde vous allez bien? Vous aimez les maths?
J'ai ici un exercice ou je n'arrive pas à LE finir, aidez moi si possible! :D au revoir merci d'avance!!!!
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maudmarine
Verified answer
Bonjour,
A = 306/425 et B = 255/192
A = 306/425 = 17 x 18 / 17 x 25 = 18/25
et
255/192 = 3 x 85 / 3 x 64 = 85/64
Donc :
A + B
18/25 + 85/64
= 18 x 64 / 25 x 64 + 85 x 25 / 64 x 25
= 1152/1600 + 2125/1600
= 3277/1600
A - B
18/25 - 85/64
= 1152/1600 - 2125/1600
= - 973/1600
A x B
18/25 x 85/64
= 1530/1600
= 10 x 153 / 10 x 160
= 153/160
A : B
18/25 : 85/64
= 18/25 x 64/85
= 1152/2125
1 votes
Thanks 0
ItsHomeworks
Merci bcpppp!!
maudmarine
De rien
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Bonjour ou bonsoir ! Je bloque a la question 2) a. Pouvez vous m'aider s'il vous plait? Merci d'avance !
Responda
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Verified answer
Bonjour,A = 306/425 et B = 255/192
A = 306/425 = 17 x 18 / 17 x 25 = 18/25
et
255/192 = 3 x 85 / 3 x 64 = 85/64
Donc :
A + B
18/25 + 85/64
= 18 x 64 / 25 x 64 + 85 x 25 / 64 x 25
= 1152/1600 + 2125/1600
= 3277/1600
A - B
18/25 - 85/64
= 1152/1600 - 2125/1600
= - 973/1600
A x B
18/25 x 85/64
= 1530/1600
= 10 x 153 / 10 x 160
= 153/160
A : B
18/25 : 85/64
= 18/25 x 64/85
= 1152/2125