alculs proposés : A = 100-43-7,20 x 4 +7,50:3 B = 100-(43 - (7,20 x 4) + (7,50 : 3)) C = ((100-43) - (7,20 x 4 +7,50)) : 3 D = (100-43) - (7,20 x 4) + (7,50 : 3
Mathématiques
bobshenlie
Question
alculs proposés : A = 100-43-7,20 x 4 +7,50:3 B = 100-(43 - (7,20 x 4) + (7,50 : 3)) C = ((100-43) - (7,20 x 4 +7,50)) : 3 D = (100-43) - (7,20 x 4) + (7,50 : 3) E = ((100-43) - 7,20 x 4 +7.50): 3.
1 Réponse
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1. Réponse Mozi
Bonjour,
A = 100 - 43 - 7,20 x 4 + 7,50 : 3
A = 100 - 43 - 28,80 + 2,50
A = 100 + 2,50 - (43 + 28,80)
A = 102,50 - 71,80
A = 30.70
B = 100 - (43 - (7,20 x 4) + (7,50 : 3))
B = 100 - (43 - 28,80 + 2,50)
B = 100 - (43 + 2,50 - 28,80)
B = 100 - (45,50 - 28,80)
B = 100 - 16,70
B = 83,30
C = ((100 - 43) - (7,20 x 4 + 7,50)) : 3
C = (57 - (28,80 + 7,50)) : 3
C = (57 - 36,30) : 3
C = 20,70 : 3
C = 6,90
D = (100 - 43) - (7,20 x 4) + (7,50 : 3)
D = 57 - 28,80 + 2,50
D = 57 + 2,50 - 28,80
D = 59,50 - 28,80
D = 30,70
E = ((100 - 43) - 7,20 x 4 + 7,50) : 3
E = (57 - 28,80 + 7,50) : 3
E = (57 + 7,50 - 28,80) : 3
E = (64,50 - 28,80) : 3
E = (64,50 - 28,80) : 3
E = 35,70 : 3
E = 11,9