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Sagot :

bonjour,

 a)

5-2 = 3

6-3= 3

(6*3)  + (3*2) = 18+6 =  24 m²

b)

12/3 = 4

(8* 12) - (4*4) = 96-16 => 80dm²

0,6dam =  6m

10-6 =4

4-3 = 1

(10*6) -( 4*1) =  60- 4 = > 56 m²

BENOITDERIDDER874

Réponse:

a.21. b.38. n4.21,2 c est les réponse

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