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Sagot :

Réponse :

Bonsoir

Explications étape par étape

Exercice 1

3/7 +5/14

3/7 X 2/2  +5/14

6/14 + 5/14

11/14

33/4 -2 X 5/2

33/4 -10/2

33/4 -10/2 X 2/2

33/4 -20/4 = 13/4

3/7 X 14/6 +1/2

42/42 + 1/2

1 X 2/2 +1/2

2/2 +1/2 = 3/2

(1/3 -1/6) X 5/2

(1/3 X 2/2 -1/6) X 5/2

(2/6 -1/6) X 5/2

1/6 X 5/2= 5/12

(4 -2/3 X 3/2) X 4/3

(4 -6/6) X 4/3

(4 X 6/6 -6/6) X 4/3

(24/6 -6/6) X 4/3

18/6 X 4/3 = 72/18 : 9/9 = 8/2 = 4

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