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Blondelapetite1
@Blondelapetite1
January 2021
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Bonjour pour m'aider c'est urgent merci d'avance
Calculer en respectant les priorités opératoires
1)3/4+1/2*2/3-1
2)15/14-6/7*2/3
3)3/2+5/2*3
------------------ c'est la barre de traction désolé
(7/3-1/6)*(-5/2)
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PetiteKyojo
Salut
1) 3/4+1/2*2/3-1 =
1/2 x 2/2 = 2/4 = 1/2
3/4+1/2 = 3/4+2/4 =5/4
2) 15/14-7/7*2/3
6/7*2/3 = 12/21 ou 4/7
15/14-4/7 =
15/14 - 8/14=7/14. ou 1/2
3) 3/2+5/2*3 = numérateur
5/2*3 = 15/2
3/2+15=2 = 18/2 ou 9
(7/3-1/6) * (-5/2) = dénominateur
(7/3-1/6) = 14/6-1/6=13/6
9 * 13/6 = 117/6
Bon courage .
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Thanks 1
Blondelapetite1
Merci
PetiteKyojo
De rien. :)
mazig
Verified answer
Bonjour ,
1) 3/4+1/2*2/3-1
3/4+1/3-1
=1/12
2)15/14*-6/7*2/3
-5/7*6/7
=-30/49
3)3/2+5/2*3 / (7/3-1/6)*(-5/2)
3/2+15/2 / 13/6*-5/2
9/-65/12
=-108/65
0 votes
Thanks 0
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Lista de comentários
1) 3/4+1/2*2/3-1 =
1/2 x 2/2 = 2/4 = 1/2
3/4+1/2 = 3/4+2/4 =5/4
2) 15/14-7/7*2/3
6/7*2/3 = 12/21 ou 4/7
15/14-4/7 =
15/14 - 8/14=7/14. ou 1/2
3) 3/2+5/2*3 = numérateur
5/2*3 = 15/2
3/2+15=2 = 18/2 ou 9
(7/3-1/6) * (-5/2) = dénominateur
(7/3-1/6) = 14/6-1/6=13/6
9 * 13/6 = 117/6
Bon courage .
Verified answer
Bonjour ,1) 3/4+1/2*2/3-1
3/4+1/3-1
=1/12
2)15/14*-6/7*2/3
-5/7*6/7
=-30/49
3)3/2+5/2*3 / (7/3-1/6)*(-5/2)
3/2+15/2 / 13/6*-5/2
9/-65/12
=-108/65