Bonjour pouvez m'aider à résoudre ce problème A = 4x + 5x B = 3y – 7y C = 4x² +7x – 2x² + 3x A = 9x B = –4y C = 4x² – 2x² + 7x + 3x
C = 2x² + 10x
D = 15x + 4x E = 3y + 5y F = 7b – 5b G = 3x – 8x H = 2a + 3a – 4a
I = –4x² + 7x² J = 16x + 7 – 7x – 9 K = –4a + 3b – 5a – 4b
L = 3x² + x +7x² – 5x
C = 2x² + 10x
D = 15x + 4x E = 3y + 5y F = 7b – 5b G = 3x – 8x H = 2a + 3a – 4a
I = –4x² + 7x² J = 16x + 7 – 7x – 9 K = –4a + 3b – 5a – 4b
L = 3x² + x +7x² – 5x
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