Réponse :bonjour voici les réponses
A =5*4/4*4 - 3/16 = 20/16 - 3/16 = 17/16
B = 1*15/1*15 - 17/15 = 15/15 -17/15 = -2/15
C = -3*6/4*6 - 5*4/6*4 = -18/24 - 20/24 = -38/24 = -19/12
D= 9/14 - 5*2/7*2 = 9/14 - 10/14 = -1/14
3*7/2*7 - -1/14 = 21/14 - -1/14 = 22/10 = 11/7
E = -9*8/3*4 = -72/12 = -6
F= 3*-5/5*12 = -15/60 = -1/4
G = 2*15/5*8 = 30/40 = 3/4 9*4/7*4 - 3*7/4-7 = 36/28 - 21/28 = 15/28
H = 3/4 *7/27 = 3*7/4*27 = 21/108 = 7/36 I = 2/7 - 15/7 2-15 = -13 = -13/7 + 5/4 = -13*4/7*4 + 5*7/4*7 = -13/7 + 5/4
= -17/28
J= 3*2/1*2 = 6/2 - 5/2 = 1/2
2*2/7*2 - 7*7/2*7 = 4/14 - 49/14 = -45/14
1/2 * 14/-45 = 14/*90 = 7/-45
Explications étape par étape :
j'espère que vous arriverez a tout comprendre
les / veulent dire fractions ( au cas ou vous ne sachiez pas )
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Réponse :bonjour voici les réponses
A =5*4/4*4 - 3/16 = 20/16 - 3/16 = 17/16
B = 1*15/1*15 - 17/15 = 15/15 -17/15 = -2/15
C = -3*6/4*6 - 5*4/6*4 = -18/24 - 20/24 = -38/24 = -19/12
D= 9/14 - 5*2/7*2 = 9/14 - 10/14 = -1/14
3*7/2*7 - -1/14 = 21/14 - -1/14 = 22/10 = 11/7
E = -9*8/3*4 = -72/12 = -6
F= 3*-5/5*12 = -15/60 = -1/4
G = 2*15/5*8 = 30/40 = 3/4 9*4/7*4 - 3*7/4-7 = 36/28 - 21/28 = 15/28
H = 3/4 *7/27 = 3*7/4*27 = 21/108 = 7/36
I = 2/7 - 15/7 2-15 = -13 = -13/7 + 5/4 = -13*4/7*4 + 5*7/4*7 = -13/7 + 5/4
= -17/28
J= 3*2/1*2 = 6/2 - 5/2 = 1/2
2*2/7*2 - 7*7/2*7 = 4/14 - 49/14 = -45/14
1/2 * 14/-45 = 14/*90 = 7/-45
Explications étape par étape :
j'espère que vous arriverez a tout comprendre
les / veulent dire fractions ( au cas ou vous ne sachiez pas )