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Exercice 2 : Calculer et mettre sous forme simplifiée 

I = 2/2 - 17/18 + 1.5/9 J = 1/2 - 1/3 + 1/4 K = 5/12 - (5/6 - 2/9) L = (1/4 - 5/3) + 12/5

Attention : on conserve l'ordre des termes à cause des soustractions

Merci 

Sagot :

DROOPETTE
I = 2/2 - 17/18 + 1.5/9
=18/18-17/18+3/18
=4/18
=2/9

J = 1/2 - 1/3 + 1/4
=6/12-4/12+3/12
=5/12

K = 5/12 - (5/6 - 2/9)
=5/12-(15/18-4/18)
=5/12-11/18
=15/36-22/36
=-7/36

L = (1/4 - 5/3) + 12/5
=(3/12-50/12)+12/5
=-47/12+12/5
=-235/60+144/60
=-91/60