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Emmaa11
@Emmaa11
May 2019
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Aidez moi svp c'est pour demain! Exercice 48 que le C, D, E, F .
Merci d'avance!!
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Commentaires (1)
Bjr,
C = 13/7 + (-8/7) ÷ (-4/5)
= 13/7 + (-8/7) * (-5/4)
= 13/7 + 40/28
= 13*4 / 7*4 + 40/28
= 52/28 + 40/28
= 92/28 = 46/14 = 23/7
D = 7/3 + 3/2 * (-10/21)
= 7/3 - 30/42
= 7*14 / 3*14 - 30/42
= 98/42 - 30/42
= 68/42 = 34/21
Tu essayes de faire les 2 derniers ?
0 votes
Thanks 1
Emmaa11
Oui je vais essayer merci beaucoup
Commentaires
C =
= 13/7 + ( - 8/7 ) / (-4/5)
= (13*4 / 7*4) + 40/28
= 52/ 28 + 40/28
= 92/28
= 23/7
D=
= 7/3 + 3/2 * (- 10/21)
= (7 *14 / 3*14) + (-30/42)
= 98/42 - 30/42
= 68/42
= 34/21
E=
= 5/8 + (-3/4) * (-10/9)
= (5*36 / 8*36) + (30 *8 / 36*8)
= 180/288 + 240 /288
= 420/288
= 35/24
F=
= 6/5 - (-1/5) * (-3/4)
= 6/5 + 1/5 *(-3/4)
= (6*4 / 5*4) - 3/20
= 24/20 - 3/20
= 21/20
1 votes
Thanks 1
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C = 13/7 + (-8/7) ÷ (-4/5)
= 13/7 + (-8/7) * (-5/4)
= 13/7 + 40/28
= 13*4 / 7*4 + 40/28
= 52/28 + 40/28
= 92/28 = 46/14 = 23/7
D = 7/3 + 3/2 * (-10/21)
= 7/3 - 30/42
= 7*14 / 3*14 - 30/42
= 98/42 - 30/42
= 68/42 = 34/21
Tu essayes de faire les 2 derniers ?
= 13/7 + ( - 8/7 ) / (-4/5)
= (13*4 / 7*4) + 40/28
= 52/ 28 + 40/28
= 92/28
= 23/7
D=
= 7/3 + 3/2 * (- 10/21)
= (7 *14 / 3*14) + (-30/42)
= 98/42 - 30/42
= 68/42
= 34/21
E=
= 5/8 + (-3/4) * (-10/9)
= (5*36 / 8*36) + (30 *8 / 36*8)
= 180/288 + 240 /288
= 420/288
= 35/24
F=
= 6/5 - (-1/5) * (-3/4)
= 6/5 + 1/5 *(-3/4)
= (6*4 / 5*4) - 3/20
= 24/20 - 3/20
= 21/20