Dm4eme priorites operatoires pour demain A=1/5*-4/3+7/2. B=4/5:(-3/7)-7/10 C=13/7+(-8/7):(-4/5). D=7/3+3/2*-10/21. E=5/8+(-3/4):(-9/16). F=6/5-(-1/9)*(-3/4)merci a tous
A=1/5*-4/3+7/2 A = - 4/15 + 7/2 A = - 4 x 2 / 15 x 2 + 7 x 15 / 2 x 15 A = - 8/30 + 105/30 A = 97/30
B=4/5:(-3/7)-7/10 B = 4/5 x - 7/3 - 7/10 B = - 28/15 - 7/10 B = - 28 x 2 / 15 x 2 - 7 x 3 / 10 x 3 B = - 56/30 - 21/30 B = - 77/30
C=13/7+(-8/7):(-4/5) C = 13/7 + (- 8/7) x - 5/4 C = 13/7 + 40/28 C = 13 x 4 / 7 x 4 + 40/28 C = 52/28 + 40/28 C = 92/28 C = 4 x 23 / 4 x 7 C = 23/7
D=7/3+3/2*-10/21 D = 7/3 - 30/42 D = 7 x 14 / 3 x 14 - 30/42 D = 98/42 - 30/42 D = 68/42 D = 2 x 34 / 2 x 21 D = 34/21
E=5/8+(-3/4):(-9/16) E = 5/8 + (- 3/4) x (- 16/9) E = 5/8 + 48/36 E = 5 x 36 / 8 x 36 + 48 x 8 / 36 x 8 E = 180/288 + 684/288 E = 864/288 E = 288 x 3 / 288 x 1 E = 3
F=6/5-(-1/9)*(-3/4) D = 6/5 - 3/36 D = 6 x 36 / 5 x 36 - 3 x 5 / 36 x 5 D = 216/180 - 15/180 D = 201/180 D = 3 x 67 / 3 x 60 D = 67/60
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Bonsoir,A=1/5*-4/3+7/2
A = - 4/15 + 7/2
A = - 4 x 2 / 15 x 2 + 7 x 15 / 2 x 15
A = - 8/30 + 105/30
A = 97/30
B=4/5:(-3/7)-7/10
B = 4/5 x - 7/3 - 7/10
B = - 28/15 - 7/10
B = - 28 x 2 / 15 x 2 - 7 x 3 / 10 x 3
B = - 56/30 - 21/30
B = - 77/30
C=13/7+(-8/7):(-4/5)
C = 13/7 + (- 8/7) x - 5/4
C = 13/7 + 40/28
C = 13 x 4 / 7 x 4 + 40/28
C = 52/28 + 40/28
C = 92/28
C = 4 x 23 / 4 x 7
C = 23/7
D=7/3+3/2*-10/21
D = 7/3 - 30/42
D = 7 x 14 / 3 x 14 - 30/42
D = 98/42 - 30/42
D = 68/42
D = 2 x 34 / 2 x 21
D = 34/21
E=5/8+(-3/4):(-9/16)
E = 5/8 + (- 3/4) x (- 16/9)
E = 5/8 + 48/36
E = 5 x 36 / 8 x 36 + 48 x 8 / 36 x 8
E = 180/288 + 684/288
E = 864/288
E = 288 x 3 / 288 x 1
E = 3
F=6/5-(-1/9)*(-3/4)
D = 6/5 - 3/36
D = 6 x 36 / 5 x 36 - 3 x 5 / 36 x 5
D = 216/180 - 15/180
D = 201/180
D = 3 x 67 / 3 x 60
D = 67/60