A = 3x + 2 + 2 (7 + 4x)
A = 3x + 2 + 14 + 8x
A = 11x + 16
B = 2 (4x - 5) + (5x + 7) - 3 (8 + 5x)
B = 8x - 10 + 5x + 7 - 24 + 15x
B = 28x - 27
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Bonjour3 x +2 + 14 + 8 x = 11 x + 16
tu fais pareil pour le second, un effort !
A = 3x + 2 + 2 (7 + 4x)
A = 3x + 2 + 14 + 8x
A = 11x + 16
B = 2 (4x - 5) + (5x + 7) - 3 (8 + 5x)
B = 8x - 10 + 5x + 7 - 24 + 15x
B = 28x - 27