bonjour
aire ABCD = 4 ( 6 - x ) = - 4 x + 24
aire DCF = 4 x /2 = 2 x
24 - 4 x = 2 x
- 4 x - 2 x = - 24
- 6 x = - 24
x = 4
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bonjour
aire ABCD = 4 ( 6 - x ) = - 4 x + 24
aire DCF = 4 x /2 = 2 x
24 - 4 x = 2 x
- 4 x - 2 x = - 24
- 6 x = - 24
x = 4