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C = 15/4 + -5/3 D = -40/21 x 14 x 6/-5 E = 5/4 - 1/12 : 2/5

Help svpp merci


Répondre :

Bonsoir ,

C=15/4+-5/3
45-20/12
=25/12

D=-40/21x14x6/-5
8/3x2x6
8x2x2
=32

E=5/4-1/12÷2/5
5/4-1/12x5/2
5/4-5/24
=25/24
C = 15/4 + -5/3
C = 15 * 3 / 4 * 3 - 5 * 4 / 3 * 4
C = 45/12 - 20/12
Tu termines

D = -40/21 * 14 * -6/5
D = -560/21 * -6/5
D = 3360/105 à simplifier

E = 5/4 - 1/12 : 2/5
E = 5/4 - 1/12 * 5/2
E = 5/4 - 5/24
E = 6 * 5 / 4 * 6 - 5/24
E = 30/24 - 5/24
E = 25/24