Объяснение:
[tex]a) \: \: 2x - 3y - 11x + 8y = - 9x + 5y \\ b) \: \: 5(2a + 1) - 3 = 10a + 5 - 3 = 10a + 2 \\ c) \: \: 14x - (x - 1) + (2x + 6) = 14x - x + 1 + 2x + 6 = 15x + 7[/tex]
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Объяснение:
[tex]a) \: \: 2x - 3y - 11x + 8y = - 9x + 5y \\ b) \: \: 5(2a + 1) - 3 = 10a + 5 - 3 = 10a + 2 \\ c) \: \: 14x - (x - 1) + (2x + 6) = 14x - x + 1 + 2x + 6 = 15x + 7[/tex]