A = -27 -7 * (-5) - 2 *4 B= 3 (2x+5)-4(2-5x) C= 5/7 - 14/25 * 15/49 D= 2/3 * 5/4 - 5/3 / 30/7 E = 1/4 + 3/4 / 1+1/8
Mathématiques
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Question
A = -27 -7 * (-5) - 2 *4
B= 3 (2x+5)-4(2-5x)
C= 5/7 - 14/25 * 15/49
D= 2/3 * 5/4 - 5/3 / 30/7
E = 1/4 + 3/4 / 1+1/8
B= 3 (2x+5)-4(2-5x)
C= 5/7 - 14/25 * 15/49
D= 2/3 * 5/4 - 5/3 / 30/7
E = 1/4 + 3/4 / 1+1/8
1 Réponse
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1. Réponse Cabé
A = -27 -7 * (-5) - 2 *4
A = -27 +35 - 8
A = 0
B= 3(2x+5)-4(2-5x)
B = 6x + 15 - 8 + 20x
B = 26x + 7
C= 5/7 - 14/25 * 15/49
C= 5/7 - 14/25 * 15/49
C= 5/7 - 210/1225
C = 5/7 - 6/35
C = 25/35 - 6/35
C = 19/35
D= 2/3 * 5/4 - 5/3 / 30/7
D = 10/12 - 35/90
D = 75/90 - 35/90
D = 4/9
E = 1/4 + 3/4 / 1+1/8
E = 1/4 +3/4+1/8
E = 2/8 + 6/8 + 1/8
E = 9/8