Recopier et compléter les égalités suivantes en justifiant par un calcul.

a.
[tex] \frac{- 9}{21.6} = \frac{...}{32.4} [/tex]
b.
[tex] \frac{5.4}{...} = \frac{6.75}{9.45} [/tex]
c.
[tex] \frac{...}{ - 0.96} = \frac{0.32}{1.28} [/tex]
d.
[tex] \frac{ - 0.6}{ - 1.6} = \frac{ - 3.12}{...} [/tex]

Mercii​
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