Réponse :
bonsoir
15 x - 5 y = 5 ( 3 x - y )
35 n + 30 p = 5 ( 7 n + 6 p )
30 x² - 42 x = 2 x ( 15 x - 21 )
6 z² + 15 = 3 ( 2 z² + 5 )
20 k² - 28 = 4 ( 5 k - 7)
7 x + 7 = 7 ( x + 1 )
Explications :
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Réponse :
bonsoir
15 x - 5 y = 5 ( 3 x - y )
35 n + 30 p = 5 ( 7 n + 6 p )
30 x² - 42 x = 2 x ( 15 x - 21 )
6 z² + 15 = 3 ( 2 z² + 5 )
20 k² - 28 = 4 ( 5 k - 7)
7 x + 7 = 7 ( x + 1 )
Explications :