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Sagot :

MOZI
Bonjour
A = - (15/28) * (14/45)
A = - (15/(2*14)) * (14/(3*15))
A = - (14/(2*14)) * (15/(3*15))
A = - (1/2) * (1/3) = -1/6

B = 35 * (8/5) * (3/14)
B = (5*7*2*4*3)/(5*7*2) = 4*3 = 12

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