bonjour
2 ( a + b ) = 2 * a + 2 *b
= 2 a + 2 b
- 4 ( 3 u + 7 ) = - 4 * 3 u - 4 * 7
- 12 u - 28
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bonjour
2 ( a + b ) = 2 * a + 2 *b
= 2 a + 2 b
- 4 ( 3 u + 7 ) = - 4 * 3 u - 4 * 7
- 12 u - 28