AIDEZ-MOI S’IL VOUS PLAÎT, MATHS NIVEAUX 5ème 7 Calculer. A = 5/8 + 7/8 = ? B = 7/10 - 5/10 = ? C = 9/12 - 3/12 = ? D = 4/11 + 5/11 = ? E = 7/12 + 6/12 = ? F =

Réponse :

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Explications étape par étape :

7 Calculer.

A = 5/8 + 7/8 = 12/8=3/2

B = 7/10 - 5/10 = 2/10=1/5

C = 9/12 - 3/12 = 6/12=1/2

D = 4/11 + 5/11 = 9/11

E = 7/12 + 6/12 = 13/12

F = 7/9 - 4/9 = 3/9=1/3

8 Calculer.

G = 13/4 - 7/4 = 6/4=3/2

H = 9/5 + 6/5 = 15/5=3

I = 10/7 + 11/7 = 21/7=3

J = 9/6 - 5/6 = 4/6=2/3

K = 13/8 + 9/8 = 22/8=11/4

L = 17/10 - 8/10 = 9/10

Réponse:

A = 3/2

B = 1/5

C = 1/2

D = 9/11

E = 13/12

F = 1/3

G = 3/2

H = 3

I = 3

J = 2/3

K = 11/4

L = 9/10