aider moi au plus vite svppp A= -2/5:3/15+2/15 B= 9/2-5/2:15/8
Mathématiques
honey97122
Question
aider moi au plus vite svppp
A= -2/5:3/15+2/15
B= 9/2-5/2:15/8
A= -2/5:3/15+2/15
B= 9/2-5/2:15/8
2 Réponse
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1. Réponse maudmarine
Bonjour
A= -2/5:3/15+2/15
A = - 2/5 x 15/3 + 2/15
A = - 30/15 + 2/15
A = - 28/15
B= 9/2-5/2:15/8
B = 9/2 - 5/2 x 8/15
B = (9 x 15) / (2 x 15) - 40/30
B = 135/30 - 40/30
B = 95/30
B = (5 x 19) / (5 x 6)
B = 19/6.
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2. Réponse loulakar
Réponse :
Explications étape par étape
Bonjour
A= -2/5:3/15+2/15
A = -2/5 x 15/3 + 2/15
A = -15/5 x 2/3 + 2/15
A = -(5 x 3)/5 x 2/3 + 2/15
A = -3 x 2/3 + 2/15
A = -3/3 x 2 + 2/15
A = -2 + 2/15
A = (-30/15) + 2/15
A = (-28/15)
B= 9/2-5/2:15/8
B = 9/2 - 5/2 x 8/15
B = 9/2 - 8/2 x 5/15
B = 9/2 - (4 x 2)/2 x 5/(5 x 3)
B = 9/2 - 4 x 1/3
B = (9 x 3)/(2 x 3) - (4 x 2)/(3 x 2)
B = 27/6 - 8/6
B = 19/6