Réponse :
Bonjour,
4/3 + 5/6 - 1/9 = 4*2 / 3*2 + 5/6 - 1/9 = 8/6 + 5/6 - 1/9 = 13/6 - 1/9
13*3 / 6*3 - 1*2 / 9*2 = 39 / 18 - 2/18 = 37/18
-1 -1/4 - 2/3 = -4/4 -1/4 -2/3 = -5/4 - 2/3 = -5*3 / 4*3 - 2*4 / 3*4 = -15 / 12 - 8/12 = -23/12
- (11/1 - (3/5 + 3/7)
= -(11 - 3/5 - 3/7)
= -11 + 3/5 + 3/7
= -11 + 3*7 / 5*7 + 3*5 / 7*5
= -11 + ( 21 +15) / 35
= -11 + 36 / 35
= -11*35/1*35 + 36/35
= -385+36 / 35
= -349/35
Des fractions très désagréables que votre prof vous as donnée.
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Réponse :
Bonjour,
4/3 + 5/6 - 1/9 = 4*2 / 3*2 + 5/6 - 1/9 = 8/6 + 5/6 - 1/9 = 13/6 - 1/9
13*3 / 6*3 - 1*2 / 9*2 = 39 / 18 - 2/18 = 37/18
-1 -1/4 - 2/3 = -4/4 -1/4 -2/3 = -5/4 - 2/3 = -5*3 / 4*3 - 2*4 / 3*4 = -15 / 12 - 8/12 = -23/12
- (11/1 - (3/5 + 3/7)
= -(11 - 3/5 - 3/7)
= -11 + 3/5 + 3/7
= -11 + 3*7 / 5*7 + 3*5 / 7*5
= -11 + ( 21 +15) / 35
= -11 + 36 / 35
= -11*35/1*35 + 36/35
= -385+36 / 35
= -349/35
Des fractions très désagréables que votre prof vous as donnée.