Réponse :
Bonsoir,
a) 1/4 + (2/3)*(3/4) = 1/4 + (2*3)/(3*4) = 1/4 + 6/12
= 1/4 + (3*2)/(3*4)
= 1/4 + 2/4
= 3/4
b) 5/3 - (2/3)*(3/5) + 2/3 = (5+2)/3 - (2*3)/(3*5) = 7/3 - 6/15
= (5*7)/(5*3) - 6/15
= 35/15 - 6/15
= 29/15
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Réponse :
Bonsoir,
a) 1/4 + (2/3)*(3/4) = 1/4 + (2*3)/(3*4) = 1/4 + 6/12
= 1/4 + (3*2)/(3*4)
= 1/4 + 2/4
= 3/4
b) 5/3 - (2/3)*(3/5) + 2/3 = (5+2)/3 - (2*3)/(3*5) = 7/3 - 6/15
= (5*7)/(5*3) - 6/15
= 35/15 - 6/15
= 29/15