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Sagot :

AYUDA

slt

numérateur de B = 20 (10/10+1/10) = 20*11/10 = 2*11 = 22

donc B = 22/2 = 11

dénominateur de D = 1/3+1/2 = 2/6 + 3/6 = 5/6

et 1/ 5/6 = 1x6/5 = 6/5 = 1,20

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